Home / 20,263.20-30,394.80-15,342.45

Finding the Fourth Proportional to 20,263.20, 30,394.80 and 15,342.45

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Solution

The fourth proportional to 20,263.20, 30,394.80 and 15,342.45 is: 23,013.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,263.20 : 30,394.80 = 15,342.45 : x
  2. Step 2: Convert to fraction form
    20,263.20/30,394.80 = 15,342.45/x
  3. Step 3: Cross multiply
    20,263.20x = 30,394.80 × 15,342.45
  4. Step 4: Simplify right side
    20,263.20x = 466,330,699.26
  5. Step 5: Solve for x
    x = 466,330,699.26/20,263.20
  6. Step 6: Final answer
    x = 23,013.68

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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.