Home / 25,788.72-38,670.12-11,947.44

Finding the Fourth Proportional to 25,788.72, 38,670.12 and 11,947.44

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Solution

The fourth proportional to 25,788.72, 38,670.12 and 11,947.44 is: 17,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,788.72 : 38,670.12 = 11,947.44 : x
  2. Step 2: Convert to fraction form
    25,788.72/38,670.12 = 11,947.44/x
  3. Step 3: Cross multiply
    25,788.72x = 38,670.12 × 11,947.44
  4. Step 4: Simplify right side
    25,788.72x = 462,008,938.49
  5. Step 5: Solve for x
    x = 462,008,938.49/25,788.72
  6. Step 6: Final answer
    x = 17,915.16

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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.