Home / 20,993.61-31,472.55-9,300.45

Finding the Fourth Proportional to 20,993.61, 31,472.55 and 9,300.45

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Solution

The fourth proportional to 20,993.61, 31,472.55 and 9,300.45 is: 13,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.61 : 31,472.55 = 9,300.45 : x
  2. Step 2: Convert to fraction form
    20,993.61/31,472.55 = 9,300.45/x
  3. Step 3: Cross multiply
    20,993.61x = 31,472.55 × 9,300.45
  4. Step 4: Simplify right side
    20,993.61x = 292,708,877.65
  5. Step 5: Solve for x
    x = 292,708,877.65/20,993.61
  6. Step 6: Final answer
    x = 13,942.76

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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.