Home / 25,785.12-38,679.84-9,142.32

Finding the Fourth Proportional to 25,785.12, 38,679.84 and 9,142.32

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Solution

The fourth proportional to 25,785.12, 38,679.84 and 9,142.32 is: 13,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,785.12 : 38,679.84 = 9,142.32 : x
  2. Step 2: Convert to fraction form
    25,785.12/38,679.84 = 9,142.32/x
  3. Step 3: Cross multiply
    25,785.12x = 38,679.84 × 9,142.32
  4. Step 4: Simplify right side
    25,785.12x = 353,623,474.83
  5. Step 5: Solve for x
    x = 353,623,474.83/25,785.12
  6. Step 6: Final answer
    x = 13,714.25

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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.