Home / 21,159.90-31,747.95-9,464.72

Finding the Fourth Proportional to 21,159.90, 31,747.95 and 9,464.72

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Solution

The fourth proportional to 21,159.90, 31,747.95 and 9,464.72 is: 14,200.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.90 : 31,747.95 = 9,464.72 : x
  2. Step 2: Convert to fraction form
    21,159.90/31,747.95 = 9,464.72/x
  3. Step 3: Cross multiply
    21,159.90x = 31,747.95 × 9,464.72
  4. Step 4: Simplify right side
    21,159.90x = 300,485,298.58
  5. Step 5: Solve for x
    x = 300,485,298.58/21,159.90
  6. Step 6: Final answer
    x = 14,200.70

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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.