Home / 15,544.47-21,451.35-8,470.89

Finding the Fourth Proportional to 15,544.47, 21,451.35 and 8,470.89

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Solution

The fourth proportional to 15,544.47, 21,451.35 and 8,470.89 is: 11,689.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,544.47 : 21,451.35 = 8,470.89 : x
  2. Step 2: Convert to fraction form
    15,544.47/21,451.35 = 8,470.89/x
  3. Step 3: Cross multiply
    15,544.47x = 21,451.35 × 8,470.89
  4. Step 4: Simplify right side
    15,544.47x = 181,712,026.20
  5. Step 5: Solve for x
    x = 181,712,026.20/15,544.47
  6. Step 6: Final answer
    x = 11,689.82

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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.