Home / 28,428.30-42,642.45-19,097.10

Finding the Fourth Proportional to 28,428.30, 42,642.45 and 19,097.10

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Solution

The fourth proportional to 28,428.30, 42,642.45 and 19,097.10 is: 28,645.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.30 : 42,642.45 = 19,097.10 : x
  2. Step 2: Convert to fraction form
    28,428.30/42,642.45 = 19,097.10/x
  3. Step 3: Cross multiply
    28,428.30x = 42,642.45 × 19,097.10
  4. Step 4: Simplify right side
    28,428.30x = 814,347,131.90
  5. Step 5: Solve for x
    x = 814,347,131.90/28,428.30
  6. Step 6: Final answer
    x = 28,645.65

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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.