Home / 20,422.31-30,604.95-11,042.10

Finding the Fourth Proportional to 20,422.31, 30,604.95 and 11,042.10

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Solution

The fourth proportional to 20,422.31, 30,604.95 and 11,042.10 is: 16,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.31 : 30,604.95 = 11,042.10 : x
  2. Step 2: Convert to fraction form
    20,422.31/30,604.95 = 11,042.10/x
  3. Step 3: Cross multiply
    20,422.31x = 30,604.95 × 11,042.10
  4. Step 4: Simplify right side
    20,422.31x = 337,942,918.40
  5. Step 5: Solve for x
    x = 337,942,918.40/20,422.31
  6. Step 6: Final answer
    x = 16,547.74

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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.