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Finding the Fourth Proportional to 15,672.80, 23,509.98 and 5,141.89

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Solution

The fourth proportional to 15,672.80, 23,509.98 and 5,141.89 is: 7,713.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.80 : 23,509.98 = 5,141.89 : x
  2. Step 2: Convert to fraction form
    15,672.80/23,509.98 = 5,141.89/x
  3. Step 3: Cross multiply
    15,672.80x = 23,509.98 × 5,141.89
  4. Step 4: Simplify right side
    15,672.80x = 120,885,613.51
  5. Step 5: Solve for x
    x = 120,885,613.51/15,672.80
  6. Step 6: Final answer
    x = 7,713.08

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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.