Home / 38,728.58-58,087.38-12,429.86

Finding the Fourth Proportional to 38,728.58, 58,087.38 and 12,429.86

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Solution

The fourth proportional to 38,728.58, 58,087.38 and 12,429.86 is: 18,643.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,728.58 : 58,087.38 = 12,429.86 : x
  2. Step 2: Convert to fraction form
    38,728.58/58,087.38 = 12,429.86/x
  3. Step 3: Cross multiply
    38,728.58x = 58,087.38 × 12,429.86
  4. Step 4: Simplify right side
    38,728.58x = 722,018,001.17
  5. Step 5: Solve for x
    x = 722,018,001.17/38,728.58
  6. Step 6: Final answer
    x = 18,643.03

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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.