Home / 20,738.79-31,113.05-9,055.35

Finding the Fourth Proportional to 20,738.79, 31,113.05 and 9,055.35

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Solution

The fourth proportional to 20,738.79, 31,113.05 and 9,055.35 is: 13,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.79 : 31,113.05 = 9,055.35 : x
  2. Step 2: Convert to fraction form
    20,738.79/31,113.05 = 9,055.35/x
  3. Step 3: Cross multiply
    20,738.79x = 31,113.05 × 9,055.35
  4. Step 4: Simplify right side
    20,738.79x = 281,739,512.04
  5. Step 5: Solve for x
    x = 281,739,512.04/20,738.79
  6. Step 6: Final answer
    x = 13,585.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.