Home / 28,263.24-39,001.32-15,687

Finding the Fourth Proportional to 28,263.24, 39,001.32 and 15,687

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Solution

The fourth proportional to 28,263.24, 39,001.32 and 15,687 is: 21,646.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.24 : 39,001.32 = 15,687 : x
  2. Step 2: Convert to fraction form
    28,263.24/39,001.32 = 15,687/x
  3. Step 3: Cross multiply
    28,263.24x = 39,001.32 × 15,687
  4. Step 4: Simplify right side
    28,263.24x = 611,813,706.84
  5. Step 5: Solve for x
    x = 611,813,706.84/28,263.24
  6. Step 6: Final answer
    x = 21,646.98

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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.