Home / 21,516.35-29,680.16-12,563.01

Finding the Fourth Proportional to 21,516.35, 29,680.16 and 12,563.01

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Solution

The fourth proportional to 21,516.35, 29,680.16 and 12,563.01 is: 17,329.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.35 : 29,680.16 = 12,563.01 : x
  2. Step 2: Convert to fraction form
    21,516.35/29,680.16 = 12,563.01/x
  3. Step 3: Cross multiply
    21,516.35x = 29,680.16 × 12,563.01
  4. Step 4: Simplify right side
    21,516.35x = 372,872,084.07
  5. Step 5: Solve for x
    x = 372,872,084.07/21,516.35
  6. Step 6: Final answer
    x = 17,329.71

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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.