Home / 15,565.60-21,479.69-8,850.30

Finding the Fourth Proportional to 15,565.60, 21,479.69 and 8,850.30

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Solution

The fourth proportional to 15,565.60, 21,479.69 and 8,850.30 is: 12,212.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,565.60 : 21,479.69 = 8,850.30 : x
  2. Step 2: Convert to fraction form
    15,565.60/21,479.69 = 8,850.30/x
  3. Step 3: Cross multiply
    15,565.60x = 21,479.69 × 8,850.30
  4. Step 4: Simplify right side
    15,565.60x = 190,101,700.41
  5. Step 5: Solve for x
    x = 190,101,700.41/15,565.60
  6. Step 6: Final answer
    x = 12,212.94

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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.