Home / 20,219.78-30,316.52-9,689.52

Finding the Fourth Proportional to 20,219.78, 30,316.52 and 9,689.52

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Solution

The fourth proportional to 20,219.78, 30,316.52 and 9,689.52 is: 14,527.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.78 : 30,316.52 = 9,689.52 : x
  2. Step 2: Convert to fraction form
    20,219.78/30,316.52 = 9,689.52/x
  3. Step 3: Cross multiply
    20,219.78x = 30,316.52 × 9,689.52
  4. Step 4: Simplify right side
    20,219.78x = 293,752,526.87
  5. Step 5: Solve for x
    x = 293,752,526.87/20,219.78
  6. Step 6: Final answer
    x = 14,527.98

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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.