Home / 14,478.32-19,981.92-8,190.56

Finding the Fourth Proportional to 14,478.32, 19,981.92 and 8,190.56

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Solution

The fourth proportional to 14,478.32, 19,981.92 and 8,190.56 is: 11,304.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.32 : 19,981.92 = 8,190.56 : x
  2. Step 2: Convert to fraction form
    14,478.32/19,981.92 = 8,190.56/x
  3. Step 3: Cross multiply
    14,478.32x = 19,981.92 × 8,190.56
  4. Step 4: Simplify right side
    14,478.32x = 163,663,114.68
  5. Step 5: Solve for x
    x = 163,663,114.68/14,478.32
  6. Step 6: Final answer
    x = 11,304.01

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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.