Home / 19,940.10-29,915.04-10,079.16

Finding the Fourth Proportional to 19,940.10, 29,915.04 and 10,079.16

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Solution

The fourth proportional to 19,940.10, 29,915.04 and 10,079.16 is: 15,121.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.10 : 29,915.04 = 10,079.16 : x
  2. Step 2: Convert to fraction form
    19,940.10/29,915.04 = 10,079.16/x
  3. Step 3: Cross multiply
    19,940.10x = 29,915.04 × 10,079.16
  4. Step 4: Simplify right side
    19,940.10x = 301,518,474.57
  5. Step 5: Solve for x
    x = 301,518,474.57/19,940.10
  6. Step 6: Final answer
    x = 15,121.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.