Home / 15,535.51-21,439.23-8,461.92

Finding the Fourth Proportional to 15,535.51, 21,439.23 and 8,461.92

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Solution

The fourth proportional to 15,535.51, 21,439.23 and 8,461.92 is: 11,677.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.51 : 21,439.23 = 8,461.92 : x
  2. Step 2: Convert to fraction form
    15,535.51/21,439.23 = 8,461.92/x
  3. Step 3: Cross multiply
    15,535.51x = 21,439.23 × 8,461.92
  4. Step 4: Simplify right side
    15,535.51x = 181,417,049.12
  5. Step 5: Solve for x
    x = 181,417,049.12/15,535.51
  6. Step 6: Final answer
    x = 11,677.57

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Double scale
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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.