Home / 20,631.57-30,947.28-7,483.92

Finding the Fourth Proportional to 20,631.57, 30,947.28 and 7,483.92

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Solution

The fourth proportional to 20,631.57, 30,947.28 and 7,483.92 is: 11,225.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631.57 : 30,947.28 = 7,483.92 : x
  2. Step 2: Convert to fraction form
    20,631.57/30,947.28 = 7,483.92/x
  3. Step 3: Cross multiply
    20,631.57x = 30,947.28 × 7,483.92
  4. Step 4: Simplify right side
    20,631.57x = 231,606,967.74
  5. Step 5: Solve for x
    x = 231,606,967.74/20,631.57
  6. Step 6: Final answer
    x = 11,225.85

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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.