Home / 15,565.16-21,479.46-8,851.52

Finding the Fourth Proportional to 15,565.16, 21,479.46 and 8,851.52

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Solution

The fourth proportional to 15,565.16, 21,479.46 and 8,851.52 is: 12,214.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.16 : 21,479.46 = 8,851.52 : x
  2. Step 2: Convert to fraction form
    15,565.16/21,479.46 = 8,851.52/x
  3. Step 3: Cross multiply
    15,565.16x = 21,479.46 × 8,851.52
  4. Step 4: Simplify right side
    15,565.16x = 190,125,869.78
  5. Step 5: Solve for x
    x = 190,125,869.78/15,565.16
  6. Step 6: Final answer
    x = 12,214.84

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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.