Home / 10,417.20-15,632.12-5,490.32

Finding the Fourth Proportional to 10,417.20, 15,632.12 and 5,490.32

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Solution

The fourth proportional to 10,417.20, 15,632.12 and 5,490.32 is: 8,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,417.20 : 15,632.12 = 5,490.32 : x
  2. Step 2: Convert to fraction form
    10,417.20/15,632.12 = 5,490.32/x
  3. Step 3: Cross multiply
    10,417.20x = 15,632.12 × 5,490.32
  4. Step 4: Simplify right side
    10,417.20x = 85,825,341.08
  5. Step 5: Solve for x
    x = 85,825,341.08/10,417.20
  6. Step 6: Final answer
    x = 8,238.81

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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.