Home / 15,139.90-20,892.73-8,766.76

Finding the Fourth Proportional to 15,139.90, 20,892.73 and 8,766.76

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Solution

The fourth proportional to 15,139.90, 20,892.73 and 8,766.76 is: 12,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.90 : 20,892.73 = 8,766.76 : x
  2. Step 2: Convert to fraction form
    15,139.90/20,892.73 = 8,766.76/x
  3. Step 3: Cross multiply
    15,139.90x = 20,892.73 × 8,766.76
  4. Step 4: Simplify right side
    15,139.90x = 183,161,549.65
  5. Step 5: Solve for x
    x = 183,161,549.65/15,139.90
  6. Step 6: Final answer
    x = 12,097.94

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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.