Home / 13,085.20-19,579.20-8,711.20

Finding the Fourth Proportional to 13,085.20, 19,579.20 and 8,711.20

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Solution

The fourth proportional to 13,085.20, 19,579.20 and 8,711.20 is: 13,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.20 : 19,579.20 = 8,711.20 : x
  2. Step 2: Convert to fraction form
    13,085.20/19,579.20 = 8,711.20/x
  3. Step 3: Cross multiply
    13,085.20x = 19,579.20 × 8,711.20
  4. Step 4: Simplify right side
    13,085.20x = 170,558,327.04
  5. Step 5: Solve for x
    x = 170,558,327.04/13,085.20
  6. Step 6: Final answer
    x = 13,034.45

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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.