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Finding the Fourth Proportional to 40,566.40, 60,838.80 and 12,486.40

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Solution

The fourth proportional to 40,566.40, 60,838.80 and 12,486.40 is: 18,726.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,566.40 : 60,838.80 = 12,486.40 : x
  2. Step 2: Convert to fraction form
    40,566.40/60,838.80 = 12,486.40/x
  3. Step 3: Cross multiply
    40,566.40x = 60,838.80 × 12,486.40
  4. Step 4: Simplify right side
    40,566.40x = 759,657,592.32
  5. Step 5: Solve for x
    x = 759,657,592.32/40,566.40
  6. Step 6: Final answer
    x = 18,726.28

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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.