Home / 39,576.32-54,615.12-21,426.92

Finding the Fourth Proportional to 39,576.32, 54,615.12 and 21,426.92

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Solution

The fourth proportional to 39,576.32, 54,615.12 and 21,426.92 is: 29,569.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,576.32 : 54,615.12 = 21,426.92 : x
  2. Step 2: Convert to fraction form
    39,576.32/54,615.12 = 21,426.92/x
  3. Step 3: Cross multiply
    39,576.32x = 54,615.12 × 21,426.92
  4. Step 4: Simplify right side
    39,576.32x = 1,170,233,807.03
  5. Step 5: Solve for x
    x = 1,170,233,807.03/39,576.32
  6. Step 6: Final answer
    x = 29,569.04

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Half scale
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Double scale
Find fourth proportional to 39,577.32, 54,616.50 and 21,427.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.