Home / 25,742.88-38,454.60-18,666.72

Finding the Fourth Proportional to 25,742.88, 38,454.60 and 18,666.72

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Solution

The fourth proportional to 25,742.88, 38,454.60 and 18,666.72 is: 27,884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,742.88 : 38,454.60 = 18,666.72 : x
  2. Step 2: Convert to fraction form
    25,742.88/38,454.60 = 18,666.72/x
  3. Step 3: Cross multiply
    25,742.88x = 38,454.60 × 18,666.72
  4. Step 4: Simplify right side
    25,742.88x = 717,821,250.91
  5. Step 5: Solve for x
    x = 717,821,250.91/25,742.88
  6. Step 6: Final answer
    x = 27,884.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.