Home / 21,713.18-29,963.67-12,153.20

Finding the Fourth Proportional to 21,713.18, 29,963.67 and 12,153.20

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Solution

The fourth proportional to 21,713.18, 29,963.67 and 12,153.20 is: 16,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,713.18 : 29,963.67 = 12,153.20 : x
  2. Step 2: Convert to fraction form
    21,713.18/29,963.67 = 12,153.20/x
  3. Step 3: Cross multiply
    21,713.18x = 29,963.67 × 12,153.20
  4. Step 4: Simplify right side
    21,713.18x = 364,154,474.24
  5. Step 5: Solve for x
    x = 364,154,474.24/21,713.18
  6. Step 6: Final answer
    x = 16,771.13

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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.