Home / 21,531.02-32,108.11-21,334.18

Finding the Fourth Proportional to 21,531.02, 32,108.11 and 21,334.18

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Solution

The fourth proportional to 21,531.02, 32,108.11 and 21,334.18 is: 31,814.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.02 : 32,108.11 = 21,334.18 : x
  2. Step 2: Convert to fraction form
    21,531.02/32,108.11 = 21,334.18/x
  3. Step 3: Cross multiply
    21,531.02x = 32,108.11 × 21,334.18
  4. Step 4: Simplify right side
    21,531.02x = 685,000,091.53
  5. Step 5: Solve for x
    x = 685,000,091.53/21,531.02
  6. Step 6: Final answer
    x = 31,814.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.