Home / 10,980.30-16,470.45-10,442.70

Finding the Fourth Proportional to 10,980.30, 16,470.45 and 10,442.70

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Solution

The fourth proportional to 10,980.30, 16,470.45 and 10,442.70 is: 15,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.30 : 16,470.45 = 10,442.70 : x
  2. Step 2: Convert to fraction form
    10,980.30/16,470.45 = 10,442.70/x
  3. Step 3: Cross multiply
    10,980.30x = 16,470.45 × 10,442.70
  4. Step 4: Simplify right side
    10,980.30x = 171,995,968.22
  5. Step 5: Solve for x
    x = 171,995,968.22/10,980.30
  6. Step 6: Final answer
    x = 15,664.05

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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.