Home / 28,400.80-42,617.40-10,883.20

Finding the Fourth Proportional to 28,400.80, 42,617.40 and 10,883.20

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Solution

The fourth proportional to 28,400.80, 42,617.40 and 10,883.20 is: 16,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.80 : 42,617.40 = 10,883.20 : x
  2. Step 2: Convert to fraction form
    28,400.80/42,617.40 = 10,883.20/x
  3. Step 3: Cross multiply
    28,400.80x = 42,617.40 × 10,883.20
  4. Step 4: Simplify right side
    28,400.80x = 463,813,687.68
  5. Step 5: Solve for x
    x = 463,813,687.68/28,400.80
  6. Step 6: Final answer
    x = 16,331.01

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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.