Home / 15,990.32-22,066-8,916.56

Finding the Fourth Proportional to 15,990.32, 22,066 and 8,916.56

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Solution

The fourth proportional to 15,990.32, 22,066 and 8,916.56 is: 12,304.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.32 : 22,066 = 8,916.56 : x
  2. Step 2: Convert to fraction form
    15,990.32/22,066 = 8,916.56/x
  3. Step 3: Cross multiply
    15,990.32x = 22,066 × 8,916.56
  4. Step 4: Simplify right side
    15,990.32x = 196,752,812.96
  5. Step 5: Solve for x
    x = 196,752,812.96/15,990.32
  6. Step 6: Final answer
    x = 12,304.50

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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.