Home / 28,402.27-39,196.84-15,655.43

Finding the Fourth Proportional to 28,402.27, 39,196.84 and 15,655.43

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Solution

The fourth proportional to 28,402.27, 39,196.84 and 15,655.43 is: 21,605.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.27 : 39,196.84 = 15,655.43 : x
  2. Step 2: Convert to fraction form
    28,402.27/39,196.84 = 15,655.43/x
  3. Step 3: Cross multiply
    28,402.27x = 39,196.84 × 15,655.43
  4. Step 4: Simplify right side
    28,402.27x = 613,643,384.84
  5. Step 5: Solve for x
    x = 613,643,384.84/28,402.27
  6. Step 6: Final answer
    x = 21,605.43

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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.