Home / 12,492.10-18,738.15-11,541.70

Finding the Fourth Proportional to 12,492.10, 18,738.15 and 11,541.70

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Solution

The fourth proportional to 12,492.10, 18,738.15 and 11,541.70 is: 17,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.10 : 18,738.15 = 11,541.70 : x
  2. Step 2: Convert to fraction form
    12,492.10/18,738.15 = 11,541.70/x
  3. Step 3: Cross multiply
    12,492.10x = 18,738.15 × 11,541.70
  4. Step 4: Simplify right side
    12,492.10x = 216,270,105.86
  5. Step 5: Solve for x
    x = 216,270,105.86/12,492.10
  6. Step 6: Final answer
    x = 17,312.55

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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.