Home / 21,316.55-31,984.03-11,444.30

Finding the Fourth Proportional to 21,316.55, 31,984.03 and 11,444.30

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Solution

The fourth proportional to 21,316.55, 31,984.03 and 11,444.30 is: 17,171.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.55 : 31,984.03 = 11,444.30 : x
  2. Step 2: Convert to fraction form
    21,316.55/31,984.03 = 11,444.30/x
  3. Step 3: Cross multiply
    21,316.55x = 31,984.03 × 11,444.30
  4. Step 4: Simplify right side
    21,316.55x = 366,034,834.53
  5. Step 5: Solve for x
    x = 366,034,834.53/21,316.55
  6. Step 6: Final answer
    x = 17,171.39

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1.5x scale

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.