Home / 20,752.47-31,130.41-8,748.08

Finding the Fourth Proportional to 20,752.47, 31,130.41 and 8,748.08

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Solution

The fourth proportional to 20,752.47, 31,130.41 and 8,748.08 is: 13,122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.47 : 31,130.41 = 8,748.08 : x
  2. Step 2: Convert to fraction form
    20,752.47/31,130.41 = 8,748.08/x
  3. Step 3: Cross multiply
    20,752.47x = 31,130.41 × 8,748.08
  4. Step 4: Simplify right side
    20,752.47x = 272,331,317.11
  5. Step 5: Solve for x
    x = 272,331,317.11/20,752.47
  6. Step 6: Final answer
    x = 13,122.84

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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.