Home / 15,833.55-21,848.63-9,865.88

Finding the Fourth Proportional to 15,833.55, 21,848.63 and 9,865.88

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Solution

The fourth proportional to 15,833.55, 21,848.63 and 9,865.88 is: 13,613.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,833.55 : 21,848.63 = 9,865.88 : x
  2. Step 2: Convert to fraction form
    15,833.55/21,848.63 = 9,865.88/x
  3. Step 3: Cross multiply
    15,833.55x = 21,848.63 × 9,865.88
  4. Step 4: Simplify right side
    15,833.55x = 215,555,961.74
  5. Step 5: Solve for x
    x = 215,555,961.74/15,833.55
  6. Step 6: Final answer
    x = 13,613.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.