Home / 20,743.52-31,117.02-7,592.72

Finding the Fourth Proportional to 20,743.52, 31,117.02 and 7,592.72

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Solution

The fourth proportional to 20,743.52, 31,117.02 and 7,592.72 is: 11,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.52 : 31,117.02 = 7,592.72 : x
  2. Step 2: Convert to fraction form
    20,743.52/31,117.02 = 7,592.72/x
  3. Step 3: Cross multiply
    20,743.52x = 31,117.02 × 7,592.72
  4. Step 4: Simplify right side
    20,743.52x = 236,262,820.09
  5. Step 5: Solve for x
    x = 236,262,820.09/20,743.52
  6. Step 6: Final answer
    x = 11,389.72

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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.