Home / 20,117.40-30,176.10-19,264.20

Finding the Fourth Proportional to 20,117.40, 30,176.10 and 19,264.20

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Solution

The fourth proportional to 20,117.40, 30,176.10 and 19,264.20 is: 28,896.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.40 : 30,176.10 = 19,264.20 : x
  2. Step 2: Convert to fraction form
    20,117.40/30,176.10 = 19,264.20/x
  3. Step 3: Cross multiply
    20,117.40x = 30,176.10 × 19,264.20
  4. Step 4: Simplify right side
    20,117.40x = 581,318,425.62
  5. Step 5: Solve for x
    x = 581,318,425.62/20,117.40
  6. Step 6: Final answer
    x = 28,896.30

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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.