Home / 21,670.07-32,531.02-12,909.11

Finding the Fourth Proportional to 21,670.07, 32,531.02 and 12,909.11

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Solution

The fourth proportional to 21,670.07, 32,531.02 and 12,909.11 is: 19,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.07 : 32,531.02 = 12,909.11 : x
  2. Step 2: Convert to fraction form
    21,670.07/32,531.02 = 12,909.11/x
  3. Step 3: Cross multiply
    21,670.07x = 32,531.02 × 12,909.11
  4. Step 4: Simplify right side
    21,670.07x = 419,946,320.66
  5. Step 5: Solve for x
    x = 419,946,320.66/21,670.07
  6. Step 6: Final answer
    x = 19,379.10

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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.