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Finding the Fourth Proportional to 15,309.54, 22,970.13 and 7,909.38

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Solution

The fourth proportional to 15,309.54, 22,970.13 and 7,909.38 is: 11,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.54 : 22,970.13 = 7,909.38 : x
  2. Step 2: Convert to fraction form
    15,309.54/22,970.13 = 7,909.38/x
  3. Step 3: Cross multiply
    15,309.54x = 22,970.13 × 7,909.38
  4. Step 4: Simplify right side
    15,309.54x = 181,679,486.82
  5. Step 5: Solve for x
    x = 181,679,486.82/15,309.54
  6. Step 6: Final answer
    x = 11,867.08

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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.