Home / 28,362.89-39,139.26-15,613.59

Finding the Fourth Proportional to 28,362.89, 39,139.26 and 15,613.59

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Solution

The fourth proportional to 28,362.89, 39,139.26 and 15,613.59 is: 21,545.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,362.89 : 39,139.26 = 15,613.59 : x
  2. Step 2: Convert to fraction form
    28,362.89/39,139.26 = 15,613.59/x
  3. Step 3: Cross multiply
    28,362.89x = 39,139.26 × 15,613.59
  4. Step 4: Simplify right side
    28,362.89x = 611,104,358.54
  5. Step 5: Solve for x
    x = 611,104,358.54/28,362.89
  6. Step 6: Final answer
    x = 21,545.92

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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.