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Finding the Fourth Proportional to 28,666.68, 42,989.64 and 9,941.64

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Solution

The fourth proportional to 28,666.68, 42,989.64 and 9,941.64 is: 14,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.68 : 42,989.64 = 9,941.64 : x
  2. Step 2: Convert to fraction form
    28,666.68/42,989.64 = 9,941.64/x
  3. Step 3: Cross multiply
    28,666.68x = 42,989.64 × 9,941.64
  4. Step 4: Simplify right side
    28,666.68x = 427,387,524.61
  5. Step 5: Solve for x
    x = 427,387,524.61/28,666.68
  6. Step 6: Final answer
    x = 14,908.86

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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.