Home / 28,456.92-39,270.54-15,710.10

Finding the Fourth Proportional to 28,456.92, 39,270.54 and 15,710.10

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Solution

The fourth proportional to 28,456.92, 39,270.54 and 15,710.10 is: 21,679.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,456.92 : 39,270.54 = 15,710.10 : x
  2. Step 2: Convert to fraction form
    28,456.92/39,270.54 = 15,710.10/x
  3. Step 3: Cross multiply
    28,456.92x = 39,270.54 × 15,710.10
  4. Step 4: Simplify right side
    28,456.92x = 616,944,110.45
  5. Step 5: Solve for x
    x = 616,944,110.45/28,456.92
  6. Step 6: Final answer
    x = 21,679.93

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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.