Home / 39,390.00-54,357.28-21,485.15

Finding the Fourth Proportional to 39,390.00, 54,357.28 and 21,485.15

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Solution

The fourth proportional to 39,390.00, 54,357.28 and 21,485.15 is: 29,649.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.00 : 54,357.28 = 21,485.15 : x
  2. Step 2: Convert to fraction form
    39,390.00/54,357.28 = 21,485.15/x
  3. Step 3: Cross multiply
    39,390.00x = 54,357.28 × 21,485.15
  4. Step 4: Simplify right side
    39,390.00x = 1,167,874,192.73
  5. Step 5: Solve for x
    x = 1,167,874,192.73/39,390.00
  6. Step 6: Final answer
    x = 29,649.00

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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.