Home / 20,345.28-30,484.56-12,531.84

Finding the Fourth Proportional to 20,345.28, 30,484.56 and 12,531.84

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Solution

The fourth proportional to 20,345.28, 30,484.56 and 12,531.84 is: 18,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.28 : 30,484.56 = 12,531.84 : x
  2. Step 2: Convert to fraction form
    20,345.28/30,484.56 = 12,531.84/x
  3. Step 3: Cross multiply
    20,345.28x = 30,484.56 × 12,531.84
  4. Step 4: Simplify right side
    20,345.28x = 382,027,628.39
  5. Step 5: Solve for x
    x = 382,027,628.39/20,345.28
  6. Step 6: Final answer
    x = 18,777.21

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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.