Home / 28,370.30-42,555.45-7,310.30

Finding the Fourth Proportional to 28,370.30, 42,555.45 and 7,310.30

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Solution

The fourth proportional to 28,370.30, 42,555.45 and 7,310.30 is: 10,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.30 : 42,555.45 = 7,310.30 : x
  2. Step 2: Convert to fraction form
    28,370.30/42,555.45 = 7,310.30/x
  3. Step 3: Cross multiply
    28,370.30x = 42,555.45 × 7,310.30
  4. Step 4: Simplify right side
    28,370.30x = 311,093,106.14
  5. Step 5: Solve for x
    x = 311,093,106.14/28,370.30
  6. Step 6: Final answer
    x = 10,965.45

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Double scale
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Similar ratio
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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.