Home / 15,186.08-20,939.46-12,792.53

Finding the Fourth Proportional to 15,186.08, 20,939.46 and 12,792.53

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Solution

The fourth proportional to 15,186.08, 20,939.46 and 12,792.53 is: 17,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.08 : 20,939.46 = 12,792.53 : x
  2. Step 2: Convert to fraction form
    15,186.08/20,939.46 = 12,792.53/x
  3. Step 3: Cross multiply
    15,186.08x = 20,939.46 × 12,792.53
  4. Step 4: Simplify right side
    15,186.08x = 267,868,746.57
  5. Step 5: Solve for x
    x = 267,868,746.57/15,186.08
  6. Step 6: Final answer
    x = 17,639.09

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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.