Home / 28,607.38-39,480.51-15,864.56

Finding the Fourth Proportional to 28,607.38, 39,480.51 and 15,864.56

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Solution

The fourth proportional to 28,607.38, 39,480.51 and 15,864.56 is: 21,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,607.38 : 39,480.51 = 15,864.56 : x
  2. Step 2: Convert to fraction form
    28,607.38/39,480.51 = 15,864.56/x
  3. Step 3: Cross multiply
    28,607.38x = 39,480.51 × 15,864.56
  4. Step 4: Simplify right side
    28,607.38x = 626,340,929.87
  5. Step 5: Solve for x
    x = 626,340,929.87/28,607.38
  6. Step 6: Final answer
    x = 21,894.38

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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.