Home / 28,357.20-42,535.80-7,580.70

Finding the Fourth Proportional to 28,357.20, 42,535.80 and 7,580.70

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Solution

The fourth proportional to 28,357.20, 42,535.80 and 7,580.70 is: 11,371.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.20 : 42,535.80 = 7,580.70 : x
  2. Step 2: Convert to fraction form
    28,357.20/42,535.80 = 7,580.70/x
  3. Step 3: Cross multiply
    28,357.20x = 42,535.80 × 7,580.70
  4. Step 4: Simplify right side
    28,357.20x = 322,451,139.06
  5. Step 5: Solve for x
    x = 322,451,139.06/28,357.20
  6. Step 6: Final answer
    x = 11,371.05

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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.