Home / 12,697.20-19,036.17-9,929.70

Finding the Fourth Proportional to 12,697.20, 19,036.17 and 9,929.70

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Solution

The fourth proportional to 12,697.20, 19,036.17 and 9,929.70 is: 14,887.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.20 : 19,036.17 = 9,929.70 : x
  2. Step 2: Convert to fraction form
    12,697.20/19,036.17 = 9,929.70/x
  3. Step 3: Cross multiply
    12,697.20x = 19,036.17 × 9,929.70
  4. Step 4: Simplify right side
    12,697.20x = 189,023,457.25
  5. Step 5: Solve for x
    x = 189,023,457.25/12,697.20
  6. Step 6: Final answer
    x = 14,887.02

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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.