Home / 15,470.12-21,345.10-8,755.74

Finding the Fourth Proportional to 15,470.12, 21,345.10 and 8,755.74

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Solution

The fourth proportional to 15,470.12, 21,345.10 and 8,755.74 is: 12,080.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.12 : 21,345.10 = 8,755.74 : x
  2. Step 2: Convert to fraction form
    15,470.12/21,345.10 = 8,755.74/x
  3. Step 3: Cross multiply
    15,470.12x = 21,345.10 × 8,755.74
  4. Step 4: Simplify right side
    15,470.12x = 186,892,164.01
  5. Step 5: Solve for x
    x = 186,892,164.01/15,470.12
  6. Step 6: Final answer
    x = 12,080.85

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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.