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Finding the Fourth Proportional to 17,347.23, 25,978.90 and 9,929.20

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Solution

The fourth proportional to 17,347.23, 25,978.90 and 9,929.20 is: 14,869.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,347.23 : 25,978.90 = 9,929.20 : x
  2. Step 2: Convert to fraction form
    17,347.23/25,978.90 = 9,929.20/x
  3. Step 3: Cross multiply
    17,347.23x = 25,978.90 × 9,929.20
  4. Step 4: Simplify right side
    17,347.23x = 257,949,693.88
  5. Step 5: Solve for x
    x = 257,949,693.88/17,347.23
  6. Step 6: Final answer
    x = 14,869.79

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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.