Home / 10,382.20-15,578.70-4,539.40

Finding the Fourth Proportional to 10,382.20, 15,578.70 and 4,539.40

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Solution

The fourth proportional to 10,382.20, 15,578.70 and 4,539.40 is: 6,811.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,382.20 : 15,578.70 = 4,539.40 : x
  2. Step 2: Convert to fraction form
    10,382.20/15,578.70 = 4,539.40/x
  3. Step 3: Cross multiply
    10,382.20x = 15,578.70 × 4,539.40
  4. Step 4: Simplify right side
    10,382.20x = 70,717,950.78
  5. Step 5: Solve for x
    x = 70,717,950.78/10,382.20
  6. Step 6: Final answer
    x = 6,811.46

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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.