Home / 15,215.32-22,785.71-12,566.62

Finding the Fourth Proportional to 15,215.32, 22,785.71 and 12,566.62

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Solution

The fourth proportional to 15,215.32, 22,785.71 and 12,566.62 is: 18,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.32 : 22,785.71 = 12,566.62 : x
  2. Step 2: Convert to fraction form
    15,215.32/22,785.71 = 12,566.62/x
  3. Step 3: Cross multiply
    15,215.32x = 22,785.71 × 12,566.62
  4. Step 4: Simplify right side
    15,215.32x = 286,339,333.45
  5. Step 5: Solve for x
    x = 286,339,333.45/15,215.32
  6. Step 6: Final answer
    x = 18,819.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.