Home / 20,148.98-30,274.50-12,756.92

Finding the Fourth Proportional to 20,148.98, 30,274.50 and 12,756.92

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Solution

The fourth proportional to 20,148.98, 30,274.50 and 12,756.92 is: 19,167.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.98 : 30,274.50 = 12,756.92 : x
  2. Step 2: Convert to fraction form
    20,148.98/30,274.50 = 12,756.92/x
  3. Step 3: Cross multiply
    20,148.98x = 30,274.50 × 12,756.92
  4. Step 4: Simplify right side
    20,148.98x = 386,209,374.54
  5. Step 5: Solve for x
    x = 386,209,374.54/20,148.98
  6. Step 6: Final answer
    x = 19,167.69

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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.