Home / 21,247.76-31,888.02-11,395.28

Finding the Fourth Proportional to 21,247.76, 31,888.02 and 11,395.28

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Solution

The fourth proportional to 21,247.76, 31,888.02 and 11,395.28 is: 17,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.76 : 31,888.02 = 11,395.28 : x
  2. Step 2: Convert to fraction form
    21,247.76/31,888.02 = 11,395.28/x
  3. Step 3: Cross multiply
    21,247.76x = 31,888.02 × 11,395.28
  4. Step 4: Simplify right side
    21,247.76x = 363,372,916.55
  5. Step 5: Solve for x
    x = 363,372,916.55/21,247.76
  6. Step 6: Final answer
    x = 17,101.70

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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.