Home / 21,325.50-29,428.56-12,372.39

Finding the Fourth Proportional to 21,325.50, 29,428.56 and 12,372.39

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Solution

The fourth proportional to 21,325.50, 29,428.56 and 12,372.39 is: 17,073.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.50 : 29,428.56 = 12,372.39 : x
  2. Step 2: Convert to fraction form
    21,325.50/29,428.56 = 12,372.39/x
  3. Step 3: Cross multiply
    21,325.50x = 29,428.56 × 12,372.39
  4. Step 4: Simplify right side
    21,325.50x = 364,101,621.46
  5. Step 5: Solve for x
    x = 364,101,621.46/21,325.50
  6. Step 6: Final answer
    x = 17,073.53

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1.5x scale

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.