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Finding the Fourth Proportional to 14,242.60, 19,654.50 and 8,655.40

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Solution

The fourth proportional to 14,242.60, 19,654.50 and 8,655.40 is: 11,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,242.60 : 19,654.50 = 8,655.40 : x
  2. Step 2: Convert to fraction form
    14,242.60/19,654.50 = 8,655.40/x
  3. Step 3: Cross multiply
    14,242.60x = 19,654.50 × 8,655.40
  4. Step 4: Simplify right side
    14,242.60x = 170,117,559.30
  5. Step 5: Solve for x
    x = 170,117,559.30/14,242.60
  6. Step 6: Final answer
    x = 11,944.28

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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.