Home / 20,656.50-30,988.71-8,810.04

Finding the Fourth Proportional to 20,656.50, 30,988.71 and 8,810.04

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Solution

The fourth proportional to 20,656.50, 30,988.71 and 8,810.04 is: 13,216.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.50 : 30,988.71 = 8,810.04 : x
  2. Step 2: Convert to fraction form
    20,656.50/30,988.71 = 8,810.04/x
  3. Step 3: Cross multiply
    20,656.50x = 30,988.71 × 8,810.04
  4. Step 4: Simplify right side
    20,656.50x = 273,011,774.65
  5. Step 5: Solve for x
    x = 273,011,774.65/20,656.50
  6. Step 6: Final answer
    x = 13,216.75

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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.