Home / 28,614.79-39,487.67-15,867.77

Finding the Fourth Proportional to 28,614.79, 39,487.67 and 15,867.77

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Solution

The fourth proportional to 28,614.79, 39,487.67 and 15,867.77 is: 21,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.79 : 39,487.67 = 15,867.77 : x
  2. Step 2: Convert to fraction form
    28,614.79/39,487.67 = 15,867.77/x
  3. Step 3: Cross multiply
    28,614.79x = 39,487.67 × 15,867.77
  4. Step 4: Simplify right side
    28,614.79x = 626,581,107.63
  5. Step 5: Solve for x
    x = 626,581,107.63/28,614.79
  6. Step 6: Final answer
    x = 21,897.11

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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.