Home / 21,985.18-32,986.98-9,498.78

Finding the Fourth Proportional to 21,985.18, 32,986.98 and 9,498.78

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Solution

The fourth proportional to 21,985.18, 32,986.98 and 9,498.78 is: 14,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.18 : 32,986.98 = 9,498.78 : x
  2. Step 2: Convert to fraction form
    21,985.18/32,986.98 = 9,498.78/x
  3. Step 3: Cross multiply
    21,985.18x = 32,986.98 × 9,498.78
  4. Step 4: Simplify right side
    21,985.18x = 313,336,065.88
  5. Step 5: Solve for x
    x = 313,336,065.88/21,985.18
  6. Step 6: Final answer
    x = 14,252.15

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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.