Home / 25,431.19-38,148.86-12,774.43

Finding the Fourth Proportional to 25,431.19, 38,148.86 and 12,774.43

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Solution

The fourth proportional to 25,431.19, 38,148.86 and 12,774.43 is: 19,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,431.19 : 38,148.86 = 12,774.43 : x
  2. Step 2: Convert to fraction form
    25,431.19/38,148.86 = 12,774.43/x
  3. Step 3: Cross multiply
    25,431.19x = 38,148.86 × 12,774.43
  4. Step 4: Simplify right side
    25,431.19x = 487,330,016.47
  5. Step 5: Solve for x
    x = 487,330,016.47/25,431.19
  6. Step 6: Final answer
    x = 19,162.69

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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.