Home / 11,898.80-16,417.32-7,422.20

Finding the Fourth Proportional to 11,898.80, 16,417.32 and 7,422.20

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Solution

The fourth proportional to 11,898.80, 16,417.32 and 7,422.20 is: 10,240.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,898.80 : 16,417.32 = 7,422.20 : x
  2. Step 2: Convert to fraction form
    11,898.80/16,417.32 = 7,422.20/x
  3. Step 3: Cross multiply
    11,898.80x = 16,417.32 × 7,422.20
  4. Step 4: Simplify right side
    11,898.80x = 121,852,632.50
  5. Step 5: Solve for x
    x = 121,852,632.50/11,898.80
  6. Step 6: Final answer
    x = 10,240.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.