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Finding the Fourth Proportional to 25,312.61, 37,968.96 and 8,672.78

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Solution

The fourth proportional to 25,312.61, 37,968.96 and 8,672.78 is: 13,009.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,312.61 : 37,968.96 = 8,672.78 : x
  2. Step 2: Convert to fraction form
    25,312.61/37,968.96 = 8,672.78/x
  3. Step 3: Cross multiply
    25,312.61x = 37,968.96 × 8,672.78
  4. Step 4: Simplify right side
    25,312.61x = 329,296,436.91
  5. Step 5: Solve for x
    x = 329,296,436.91/25,312.61
  6. Step 6: Final answer
    x = 13,009.19

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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.