Home / 14,291.11-19,721.28-7,917.45

Finding the Fourth Proportional to 14,291.11, 19,721.28 and 7,917.45

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Solution

The fourth proportional to 14,291.11, 19,721.28 and 7,917.45 is: 10,925.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,291.11 : 19,721.28 = 7,917.45 : x
  2. Step 2: Convert to fraction form
    14,291.11/19,721.28 = 7,917.45/x
  3. Step 3: Cross multiply
    14,291.11x = 19,721.28 × 7,917.45
  4. Step 4: Simplify right side
    14,291.11x = 156,142,248.34
  5. Step 5: Solve for x
    x = 156,142,248.34/14,291.11
  6. Step 6: Final answer
    x = 10,925.83

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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.