Home / 21,243.18-29,316.33-12,170.16

Finding the Fourth Proportional to 21,243.18, 29,316.33 and 12,170.16

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Solution

The fourth proportional to 21,243.18, 29,316.33 and 12,170.16 is: 16,795.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.18 : 29,316.33 = 12,170.16 : x
  2. Step 2: Convert to fraction form
    21,243.18/29,316.33 = 12,170.16/x
  3. Step 3: Cross multiply
    21,243.18x = 29,316.33 × 12,170.16
  4. Step 4: Simplify right side
    21,243.18x = 356,784,280.13
  5. Step 5: Solve for x
    x = 356,784,280.13/21,243.18
  6. Step 6: Final answer
    x = 16,795.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.