Home / 10,390.60-15,618.30-10,196.20

Finding the Fourth Proportional to 10,390.60, 15,618.30 and 10,196.20

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Solution

The fourth proportional to 10,390.60, 15,618.30 and 10,196.20 is: 15,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.60 : 15,618.30 = 10,196.20 : x
  2. Step 2: Convert to fraction form
    10,390.60/15,618.30 = 10,196.20/x
  3. Step 3: Cross multiply
    10,390.60x = 15,618.30 × 10,196.20
  4. Step 4: Simplify right side
    10,390.60x = 159,247,310.46
  5. Step 5: Solve for x
    x = 159,247,310.46/10,390.60
  6. Step 6: Final answer
    x = 15,326.09

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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.