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Finding the Fourth Proportional to 25,988.22, 38,982.93 and 8,459.42

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Solution

The fourth proportional to 25,988.22, 38,982.93 and 8,459.42 is: 12,689.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,988.22 : 38,982.93 = 8,459.42 : x
  2. Step 2: Convert to fraction form
    25,988.22/38,982.93 = 8,459.42/x
  3. Step 3: Cross multiply
    25,988.22x = 38,982.93 × 8,459.42
  4. Step 4: Simplify right side
    25,988.22x = 329,772,782.79
  5. Step 5: Solve for x
    x = 329,772,782.79/25,988.22
  6. Step 6: Final answer
    x = 12,689.32

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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.