Home / 10,287.80-15,416.78-4,356.50

Finding the Fourth Proportional to 10,287.80, 15,416.78 and 4,356.50

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Solution

The fourth proportional to 10,287.80, 15,416.78 and 4,356.50 is: 6,528.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.80 : 15,416.78 = 4,356.50 : x
  2. Step 2: Convert to fraction form
    10,287.80/15,416.78 = 4,356.50/x
  3. Step 3: Cross multiply
    10,287.80x = 15,416.78 × 4,356.50
  4. Step 4: Simplify right side
    10,287.80x = 67,163,103.20
  5. Step 5: Solve for x
    x = 67,163,103.20/10,287.80
  6. Step 6: Final answer
    x = 6,528.43

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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.