Home / 18,420.17-27,615.33-5,763.40

Finding the Fourth Proportional to 18,420.17, 27,615.33 and 5,763.40

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Solution

The fourth proportional to 18,420.17, 27,615.33 and 5,763.40 is: 8,640.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.17 : 27,615.33 = 5,763.40 : x
  2. Step 2: Convert to fraction form
    18,420.17/27,615.33 = 5,763.40/x
  3. Step 3: Cross multiply
    18,420.17x = 27,615.33 × 5,763.40
  4. Step 4: Simplify right side
    18,420.17x = 159,158,123.88
  5. Step 5: Solve for x
    x = 159,158,123.88/18,420.17
  6. Step 6: Final answer
    x = 8,640.43

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1.5x scale

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.