Home / 21,108.53-31,666.88-6,316.18

Finding the Fourth Proportional to 21,108.53, 31,666.88 and 6,316.18

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Solution

The fourth proportional to 21,108.53, 31,666.88 and 6,316.18 is: 9,475.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.53 : 31,666.88 = 6,316.18 : x
  2. Step 2: Convert to fraction form
    21,108.53/31,666.88 = 6,316.18/x
  3. Step 3: Cross multiply
    21,108.53x = 31,666.88 × 6,316.18
  4. Step 4: Simplify right side
    21,108.53x = 200,013,524.20
  5. Step 5: Solve for x
    x = 200,013,524.20/21,108.53
  6. Step 6: Final answer
    x = 9,475.48

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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.