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Finding the Fourth Proportional to 38,153.53, 52,652.03 and 21,386.53

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Solution

The fourth proportional to 38,153.53, 52,652.03 and 21,386.53 is: 29,513.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,153.53 : 52,652.03 = 21,386.53 : x
  2. Step 2: Convert to fraction form
    38,153.53/52,652.03 = 21,386.53/x
  3. Step 3: Cross multiply
    38,153.53x = 52,652.03 × 21,386.53
  4. Step 4: Simplify right side
    38,153.53x = 1,126,044,178.04
  5. Step 5: Solve for x
    x = 1,126,044,178.04/38,153.53
  6. Step 6: Final answer
    x = 29,513.50

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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.