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Finding the Fourth Proportional to 43,098.80, 64,648.08 and 13,516.80

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Solution

The fourth proportional to 43,098.80, 64,648.08 and 13,516.80 is: 20,275.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,098.80 : 64,648.08 = 13,516.80 : x
  2. Step 2: Convert to fraction form
    43,098.80/64,648.08 = 13,516.80/x
  3. Step 3: Cross multiply
    43,098.80x = 64,648.08 × 13,516.80
  4. Step 4: Simplify right side
    43,098.80x = 873,835,167.74
  5. Step 5: Solve for x
    x = 873,835,167.74/43,098.80
  6. Step 6: Final answer
    x = 20,275.16

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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.