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Finding the Fourth Proportional to 40,515.68, 60,773.12 and 12,813.68

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Solution

The fourth proportional to 40,515.68, 60,773.12 and 12,813.68 is: 19,220.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,515.68 : 60,773.12 = 12,813.68 : x
  2. Step 2: Convert to fraction form
    40,515.68/60,773.12 = 12,813.68/x
  3. Step 3: Cross multiply
    40,515.68x = 60,773.12 × 12,813.68
  4. Step 4: Simplify right side
    40,515.68x = 778,727,312.28
  5. Step 5: Solve for x
    x = 778,727,312.28/40,515.68
  6. Step 6: Final answer
    x = 19,220.39

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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.