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Finding the Fourth Proportional to 15,580.88, 23,351.88 and 7,791.92

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Solution

The fourth proportional to 15,580.88, 23,351.88 and 7,791.92 is: 11,678.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.88 : 23,351.88 = 7,791.92 : x
  2. Step 2: Convert to fraction form
    15,580.88/23,351.88 = 7,791.92/x
  3. Step 3: Cross multiply
    15,580.88x = 23,351.88 × 7,791.92
  4. Step 4: Simplify right side
    15,580.88x = 181,955,980.81
  5. Step 5: Solve for x
    x = 181,955,980.81/15,580.88
  6. Step 6: Final answer
    x = 11,678.16

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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.