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Finding the Fourth Proportional to 34,885.71, 48,142.17 and 18,970.20

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Solution

The fourth proportional to 34,885.71, 48,142.17 and 18,970.20 is: 26,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,885.71 : 48,142.17 = 18,970.20 : x
  2. Step 2: Convert to fraction form
    34,885.71/48,142.17 = 18,970.20/x
  3. Step 3: Cross multiply
    34,885.71x = 48,142.17 × 18,970.20
  4. Step 4: Simplify right side
    34,885.71x = 913,266,593.33
  5. Step 5: Solve for x
    x = 913,266,593.33/34,885.71
  6. Step 6: Final answer
    x = 26,178.82

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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.