Home / 21,716.08-32,578.90-12,360.50

Finding the Fourth Proportional to 21,716.08, 32,578.90 and 12,360.50

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Solution

The fourth proportional to 21,716.08, 32,578.90 and 12,360.50 is: 18,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.08 : 32,578.90 = 12,360.50 : x
  2. Step 2: Convert to fraction form
    21,716.08/32,578.90 = 12,360.50/x
  3. Step 3: Cross multiply
    21,716.08x = 32,578.90 × 12,360.50
  4. Step 4: Simplify right side
    21,716.08x = 402,691,421.83
  5. Step 5: Solve for x
    x = 402,691,421.83/21,716.08
  6. Step 6: Final answer
    x = 18,543.47

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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.