Home / 28,145.76-42,218.58-9,422.28

Finding the Fourth Proportional to 28,145.76, 42,218.58 and 9,422.28

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Solution

The fourth proportional to 28,145.76, 42,218.58 and 9,422.28 is: 14,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.76 : 42,218.58 = 9,422.28 : x
  2. Step 2: Convert to fraction form
    28,145.76/42,218.58 = 9,422.28/x
  3. Step 3: Cross multiply
    28,145.76x = 42,218.58 × 9,422.28
  4. Step 4: Simplify right side
    28,145.76x = 397,795,281.96
  5. Step 5: Solve for x
    x = 397,795,281.96/28,145.76
  6. Step 6: Final answer
    x = 14,133.40

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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.