Home / 18,377.55-25,360.20-10,420.29

Finding the Fourth Proportional to 18,377.55, 25,360.20 and 10,420.29

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Solution

The fourth proportional to 18,377.55, 25,360.20 and 10,420.29 is: 14,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,377.55 : 25,360.20 = 10,420.29 : x
  2. Step 2: Convert to fraction form
    18,377.55/25,360.20 = 10,420.29/x
  3. Step 3: Cross multiply
    18,377.55x = 25,360.20 × 10,420.29
  4. Step 4: Simplify right side
    18,377.55x = 264,260,638.46
  5. Step 5: Solve for x
    x = 264,260,638.46/18,377.55
  6. Step 6: Final answer
    x = 14,379.54

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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.