Home / 15,282.18-21,098.61-9,985.86

Finding the Fourth Proportional to 15,282.18, 21,098.61 and 9,985.86

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Solution

The fourth proportional to 15,282.18, 21,098.61 and 9,985.86 is: 13,786.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.18 : 21,098.61 = 9,985.86 : x
  2. Step 2: Convert to fraction form
    15,282.18/21,098.61 = 9,985.86/x
  3. Step 3: Cross multiply
    15,282.18x = 21,098.61 × 9,985.86
  4. Step 4: Simplify right side
    15,282.18x = 210,687,765.65
  5. Step 5: Solve for x
    x = 210,687,765.65/15,282.18
  6. Step 6: Final answer
    x = 13,786.50

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1.5x scale

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.