Home / 20,302.39-30,432.84-11,518.75

Finding the Fourth Proportional to 20,302.39, 30,432.84 and 11,518.75

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Solution

The fourth proportional to 20,302.39, 30,432.84 and 11,518.75 is: 17,266.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.39 : 30,432.84 = 11,518.75 : x
  2. Step 2: Convert to fraction form
    20,302.39/30,432.84 = 11,518.75/x
  3. Step 3: Cross multiply
    20,302.39x = 30,432.84 × 11,518.75
  4. Step 4: Simplify right side
    20,302.39x = 350,548,275.75
  5. Step 5: Solve for x
    x = 350,548,275.75/20,302.39
  6. Step 6: Final answer
    x = 17,266.36

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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.