Home / 14,929.76-20,603.40-8,215.74

Finding the Fourth Proportional to 14,929.76, 20,603.40 and 8,215.74

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Solution

The fourth proportional to 14,929.76, 20,603.40 and 8,215.74 is: 11,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,929.76 : 20,603.40 = 8,215.74 : x
  2. Step 2: Convert to fraction form
    14,929.76/20,603.40 = 8,215.74/x
  3. Step 3: Cross multiply
    14,929.76x = 20,603.40 × 8,215.74
  4. Step 4: Simplify right side
    14,929.76x = 169,272,177.52
  5. Step 5: Solve for x
    x = 169,272,177.52/14,929.76
  6. Step 6: Final answer
    x = 11,337.90

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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.