Home / 28,646.27-39,531.26-15,898.71

Finding the Fourth Proportional to 28,646.27, 39,531.26 and 15,898.71

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Solution

The fourth proportional to 28,646.27, 39,531.26 and 15,898.71 is: 21,939.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.27 : 39,531.26 = 15,898.71 : x
  2. Step 2: Convert to fraction form
    28,646.27/39,531.26 = 15,898.71/x
  3. Step 3: Cross multiply
    28,646.27x = 39,531.26 × 15,898.71
  4. Step 4: Simplify right side
    28,646.27x = 628,496,018.80
  5. Step 5: Solve for x
    x = 628,496,018.80/28,646.27
  6. Step 6: Final answer
    x = 21,939.89

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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.