Home / 15,334.78-21,161.91-9,365.62

Finding the Fourth Proportional to 15,334.78, 21,161.91 and 9,365.62

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Solution

The fourth proportional to 15,334.78, 21,161.91 and 9,365.62 is: 12,924.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.78 : 21,161.91 = 9,365.62 : x
  2. Step 2: Convert to fraction form
    15,334.78/21,161.91 = 9,365.62/x
  3. Step 3: Cross multiply
    15,334.78x = 21,161.91 × 9,365.62
  4. Step 4: Simplify right side
    15,334.78x = 198,194,407.53
  5. Step 5: Solve for x
    x = 198,194,407.53/15,334.78
  6. Step 6: Final answer
    x = 12,924.50

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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.