Home / 28,386.30-42,579.45-7,326.30

Finding the Fourth Proportional to 28,386.30, 42,579.45 and 7,326.30

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Solution

The fourth proportional to 28,386.30, 42,579.45 and 7,326.30 is: 10,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.30 : 42,579.45 = 7,326.30 : x
  2. Step 2: Convert to fraction form
    28,386.30/42,579.45 = 7,326.30/x
  3. Step 3: Cross multiply
    28,386.30x = 42,579.45 × 7,326.30
  4. Step 4: Simplify right side
    28,386.30x = 311,949,824.54
  5. Step 5: Solve for x
    x = 311,949,824.54/28,386.30
  6. Step 6: Final answer
    x = 10,989.45

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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.