Home / 28,453.18-42,680.40-7,394.05

Finding the Fourth Proportional to 28,453.18, 42,680.40 and 7,394.05

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Solution

The fourth proportional to 28,453.18, 42,680.40 and 7,394.05 is: 11,091.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.18 : 42,680.40 = 7,394.05 : x
  2. Step 2: Convert to fraction form
    28,453.18/42,680.40 = 7,394.05/x
  3. Step 3: Cross multiply
    28,453.18x = 42,680.40 × 7,394.05
  4. Step 4: Simplify right side
    28,453.18x = 315,581,011.62
  5. Step 5: Solve for x
    x = 315,581,011.62/28,453.18
  6. Step 6: Final answer
    x = 11,091.24

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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.