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Finding the Fourth Proportional to 22,034.79, 30,407.90 and 11,963.16

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Solution

The fourth proportional to 22,034.79, 30,407.90 and 11,963.16 is: 16,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,034.79 : 30,407.90 = 11,963.16 : x
  2. Step 2: Convert to fraction form
    22,034.79/30,407.90 = 11,963.16/x
  3. Step 3: Cross multiply
    22,034.79x = 30,407.90 × 11,963.16
  4. Step 4: Simplify right side
    22,034.79x = 363,774,513.15
  5. Step 5: Solve for x
    x = 363,774,513.15/22,034.79
  6. Step 6: Final answer
    x = 16,509.10

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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.