Home / 18,376.32-25,351.20-10,920

Finding the Fourth Proportional to 18,376.32, 25,351.20 and 10,920

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Solution

The fourth proportional to 18,376.32, 25,351.20 and 10,920 is: 15,064.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376.32 : 25,351.20 = 10,920 : x
  2. Step 2: Convert to fraction form
    18,376.32/25,351.20 = 10,920/x
  3. Step 3: Cross multiply
    18,376.32x = 25,351.20 × 10,920
  4. Step 4: Simplify right side
    18,376.32x = 276,835,104
  5. Step 5: Solve for x
    x = 276,835,104/18,376.32
  6. Step 6: Final answer
    x = 15,064.77

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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.