Home / 20,760.12-31,152.65-7,432.07

Finding the Fourth Proportional to 20,760.12, 31,152.65 and 7,432.07

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Solution

The fourth proportional to 20,760.12, 31,152.65 and 7,432.07 is: 11,152.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.12 : 31,152.65 = 7,432.07 : x
  2. Step 2: Convert to fraction form
    20,760.12/31,152.65 = 7,432.07/x
  3. Step 3: Cross multiply
    20,760.12x = 31,152.65 × 7,432.07
  4. Step 4: Simplify right side
    20,760.12x = 231,528,482.56
  5. Step 5: Solve for x
    x = 231,528,482.56/20,760.12
  6. Step 6: Final answer
    x = 11,152.56

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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.