Home / 28,148.96-42,209.28-9,422.48

Finding the Fourth Proportional to 28,148.96, 42,209.28 and 9,422.48

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Solution

The fourth proportional to 28,148.96, 42,209.28 and 9,422.48 is: 14,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.96 : 42,209.28 = 9,422.48 : x
  2. Step 2: Convert to fraction form
    28,148.96/42,209.28 = 9,422.48/x
  3. Step 3: Cross multiply
    28,148.96x = 42,209.28 × 9,422.48
  4. Step 4: Simplify right side
    28,148.96x = 397,716,096.61
  5. Step 5: Solve for x
    x = 397,716,096.61/28,148.96
  6. Step 6: Final answer
    x = 14,128.98

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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.