Home / 28,000.50-38,640.69-15,426.06

Finding the Fourth Proportional to 28,000.50, 38,640.69 and 15,426.06

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Solution

The fourth proportional to 28,000.50, 38,640.69 and 15,426.06 is: 21,287.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.50 : 38,640.69 = 15,426.06 : x
  2. Step 2: Convert to fraction form
    28,000.50/38,640.69 = 15,426.06/x
  3. Step 3: Cross multiply
    28,000.50x = 38,640.69 × 15,426.06
  4. Step 4: Simplify right side
    28,000.50x = 596,073,602.38
  5. Step 5: Solve for x
    x = 596,073,602.38/28,000.50
  6. Step 6: Final answer
    x = 21,287.96

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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.