Home / 10,389.80-15,579.16-4,539.56

Finding the Fourth Proportional to 10,389.80, 15,579.16 and 4,539.56

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Solution

The fourth proportional to 10,389.80, 15,579.16 and 4,539.56 is: 6,806.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.80 : 15,579.16 = 4,539.56 : x
  2. Step 2: Convert to fraction form
    10,389.80/15,579.16 = 4,539.56/x
  3. Step 3: Cross multiply
    10,389.80x = 15,579.16 × 4,539.56
  4. Step 4: Simplify right side
    10,389.80x = 70,722,531.57
  5. Step 5: Solve for x
    x = 70,722,531.57/10,389.80
  6. Step 6: Final answer
    x = 6,806.92

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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.