Home / 20,188.23-30,254.58-10,306.68

Finding the Fourth Proportional to 20,188.23, 30,254.58 and 10,306.68

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Solution

The fourth proportional to 20,188.23, 30,254.58 and 10,306.68 is: 15,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.23 : 30,254.58 = 10,306.68 : x
  2. Step 2: Convert to fraction form
    20,188.23/30,254.58 = 10,306.68/x
  3. Step 3: Cross multiply
    20,188.23x = 30,254.58 × 10,306.68
  4. Step 4: Simplify right side
    20,188.23x = 311,824,274.59
  5. Step 5: Solve for x
    x = 311,824,274.59/20,188.23
  6. Step 6: Final answer
    x = 15,445.85

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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.