Home / 15,730.22-21,708.12-8,560.58

Finding the Fourth Proportional to 15,730.22, 21,708.12 and 8,560.58

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Solution

The fourth proportional to 15,730.22, 21,708.12 and 8,560.58 is: 11,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.22 : 21,708.12 = 8,560.58 : x
  2. Step 2: Convert to fraction form
    15,730.22/21,708.12 = 8,560.58/x
  3. Step 3: Cross multiply
    15,730.22x = 21,708.12 × 8,560.58
  4. Step 4: Simplify right side
    15,730.22x = 185,834,097.91
  5. Step 5: Solve for x
    x = 185,834,097.91/15,730.22
  6. Step 6: Final answer
    x = 11,813.83

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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.