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Finding the Fourth Proportional to 25,373.60, 38,060.40 and 17,986.40

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Solution

The fourth proportional to 25,373.60, 38,060.40 and 17,986.40 is: 26,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,373.60 : 38,060.40 = 17,986.40 : x
  2. Step 2: Convert to fraction form
    25,373.60/38,060.40 = 17,986.40/x
  3. Step 3: Cross multiply
    25,373.60x = 38,060.40 × 17,986.40
  4. Step 4: Simplify right side
    25,373.60x = 684,569,578.56
  5. Step 5: Solve for x
    x = 684,569,578.56/25,373.60
  6. Step 6: Final answer
    x = 26,979.60

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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.