Home / 19,079.20-28,638.24-13,247.20

Finding the Fourth Proportional to 19,079.20, 28,638.24 and 13,247.20

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Solution

The fourth proportional to 19,079.20, 28,638.24 and 13,247.20 is: 19,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,079.20 : 28,638.24 = 13,247.20 : x
  2. Step 2: Convert to fraction form
    19,079.20/28,638.24 = 13,247.20/x
  3. Step 3: Cross multiply
    19,079.20x = 28,638.24 × 13,247.20
  4. Step 4: Simplify right side
    19,079.20x = 379,376,492.93
  5. Step 5: Solve for x
    x = 379,376,492.93/19,079.20
  6. Step 6: Final answer
    x = 19,884.30

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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.