Home / 15,565.32-21,480.15-8,851.37

Finding the Fourth Proportional to 15,565.32, 21,480.15 and 8,851.37

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Solution

The fourth proportional to 15,565.32, 21,480.15 and 8,851.37 is: 12,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.32 : 21,480.15 = 8,851.37 : x
  2. Step 2: Convert to fraction form
    15,565.32/21,480.15 = 8,851.37/x
  3. Step 3: Cross multiply
    15,565.32x = 21,480.15 × 8,851.37
  4. Step 4: Simplify right side
    15,565.32x = 190,128,647.90
  5. Step 5: Solve for x
    x = 190,128,647.90/15,565.32
  6. Step 6: Final answer
    x = 12,214.89

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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.