Home / 20,193.40-30,253.65-18,881.20

Finding the Fourth Proportional to 20,193.40, 30,253.65 and 18,881.20

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Solution

The fourth proportional to 20,193.40, 30,253.65 and 18,881.20 is: 28,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.40 : 30,253.65 = 18,881.20 : x
  2. Step 2: Convert to fraction form
    20,193.40/30,253.65 = 18,881.20/x
  3. Step 3: Cross multiply
    20,193.40x = 30,253.65 × 18,881.20
  4. Step 4: Simplify right side
    20,193.40x = 571,225,216.38
  5. Step 5: Solve for x
    x = 571,225,216.38/20,193.40
  6. Step 6: Final answer
    x = 28,287.72

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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.