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Finding the Fourth Proportional to 16,840.20, 25,211.70 and 15,965.40

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Solution

The fourth proportional to 16,840.20, 25,211.70 and 15,965.40 is: 23,902.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.20 : 25,211.70 = 15,965.40 : x
  2. Step 2: Convert to fraction form
    16,840.20/25,211.70 = 15,965.40/x
  3. Step 3: Cross multiply
    16,840.20x = 25,211.70 × 15,965.40
  4. Step 4: Simplify right side
    16,840.20x = 402,514,875.18
  5. Step 5: Solve for x
    x = 402,514,875.18/16,840.20
  6. Step 6: Final answer
    x = 23,902.02

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1.5x scale

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.