Home / 15,351.36-21,179.52-9,061.44

Finding the Fourth Proportional to 15,351.36, 21,179.52 and 9,061.44

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Solution

The fourth proportional to 15,351.36, 21,179.52 and 9,061.44 is: 12,501.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.36 : 21,179.52 = 9,061.44 : x
  2. Step 2: Convert to fraction form
    15,351.36/21,179.52 = 9,061.44/x
  3. Step 3: Cross multiply
    15,351.36x = 21,179.52 × 9,061.44
  4. Step 4: Simplify right side
    15,351.36x = 191,916,949.71
  5. Step 5: Solve for x
    x = 191,916,949.71/15,351.36
  6. Step 6: Final answer
    x = 12,501.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.