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Finding the Fourth Proportional to 25,959, 38,943.36 and 8,424.12

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Solution

The fourth proportional to 25,959, 38,943.36 and 8,424.12 is: 12,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959 : 38,943.36 = 8,424.12 : x
  2. Step 2: Convert to fraction form
    25,959/38,943.36 = 8,424.12/x
  3. Step 3: Cross multiply
    25,959x = 38,943.36 × 8,424.12
  4. Step 4: Simplify right side
    25,959x = 328,063,537.84
  5. Step 5: Solve for x
    x = 328,063,537.84/25,959
  6. Step 6: Final answer
    x = 12,637.76

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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.