Home / 20,772.65-31,152.90-7,444.10

Finding the Fourth Proportional to 20,772.65, 31,152.90 and 7,444.10

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Solution

The fourth proportional to 20,772.65, 31,152.90 and 7,444.10 is: 11,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.65 : 31,152.90 = 7,444.10 : x
  2. Step 2: Convert to fraction form
    20,772.65/31,152.90 = 7,444.10/x
  3. Step 3: Cross multiply
    20,772.65x = 31,152.90 × 7,444.10
  4. Step 4: Simplify right side
    20,772.65x = 231,905,302.89
  5. Step 5: Solve for x
    x = 231,905,302.89/20,772.65
  6. Step 6: Final answer
    x = 11,163.97

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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.