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Finding the Fourth Proportional to 31,592.64, 43,592.88 and 18,164.40

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Solution

The fourth proportional to 31,592.64, 43,592.88 and 18,164.40 is: 25,064.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,592.64 : 43,592.88 = 18,164.40 : x
  2. Step 2: Convert to fraction form
    31,592.64/43,592.88 = 18,164.40/x
  3. Step 3: Cross multiply
    31,592.64x = 43,592.88 × 18,164.40
  4. Step 4: Simplify right side
    31,592.64x = 791,838,509.47
  5. Step 5: Solve for x
    x = 791,838,509.47/31,592.64
  6. Step 6: Final answer
    x = 25,064.02

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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.