Home / 25,885.61-38,820.90-10,087.12

Finding the Fourth Proportional to 25,885.61, 38,820.90 and 10,087.12

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Solution

The fourth proportional to 25,885.61, 38,820.90 and 10,087.12 is: 15,127.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,885.61 : 38,820.90 = 10,087.12 : x
  2. Step 2: Convert to fraction form
    25,885.61/38,820.90 = 10,087.12/x
  3. Step 3: Cross multiply
    25,885.61x = 38,820.90 × 10,087.12
  4. Step 4: Simplify right side
    25,885.61x = 391,590,979.76
  5. Step 5: Solve for x
    x = 391,590,979.76/25,885.61
  6. Step 6: Final answer
    x = 15,127.75

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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.