Home / 22,440.96-30,974.40-15,364.80

Finding the Fourth Proportional to 22,440.96, 30,974.40 and 15,364.80

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Solution

The fourth proportional to 22,440.96, 30,974.40 and 15,364.80 is: 21,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,440.96 : 30,974.40 = 15,364.80 : x
  2. Step 2: Convert to fraction form
    22,440.96/30,974.40 = 15,364.80/x
  3. Step 3: Cross multiply
    22,440.96x = 30,974.40 × 15,364.80
  4. Step 4: Simplify right side
    22,440.96x = 475,915,461.12
  5. Step 5: Solve for x
    x = 475,915,461.12/22,440.96
  6. Step 6: Final answer
    x = 21,207.45

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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.