Home / 38,782.16-58,182.35-12,485.91

Finding the Fourth Proportional to 38,782.16, 58,182.35 and 12,485.91

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Solution

The fourth proportional to 38,782.16, 58,182.35 and 12,485.91 is: 18,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.16 : 58,182.35 = 12,485.91 : x
  2. Step 2: Convert to fraction form
    38,782.16/58,182.35 = 12,485.91/x
  3. Step 3: Cross multiply
    38,782.16x = 58,182.35 × 12,485.91
  4. Step 4: Simplify right side
    38,782.16x = 726,459,585.69
  5. Step 5: Solve for x
    x = 726,459,585.69/38,782.16
  6. Step 6: Final answer
    x = 18,731.80

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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.