Home / 28,276.80-42,431.40-10,759.20

Finding the Fourth Proportional to 28,276.80, 42,431.40 and 10,759.20

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Solution

The fourth proportional to 28,276.80, 42,431.40 and 10,759.20 is: 16,144.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.80 : 42,431.40 = 10,759.20 : x
  2. Step 2: Convert to fraction form
    28,276.80/42,431.40 = 10,759.20/x
  3. Step 3: Cross multiply
    28,276.80x = 42,431.40 × 10,759.20
  4. Step 4: Simplify right side
    28,276.80x = 456,527,918.88
  5. Step 5: Solve for x
    x = 456,527,918.88/28,276.80
  6. Step 6: Final answer
    x = 16,144.96

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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.