Home / 18,218.34-25,142.40-10,260.90

Finding the Fourth Proportional to 18,218.34, 25,142.40 and 10,260.90

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Solution

The fourth proportional to 18,218.34, 25,142.40 and 10,260.90 is: 14,160.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.34 : 25,142.40 = 10,260.90 : x
  2. Step 2: Convert to fraction form
    18,218.34/25,142.40 = 10,260.90/x
  3. Step 3: Cross multiply
    18,218.34x = 25,142.40 × 10,260.90
  4. Step 4: Simplify right side
    18,218.34x = 257,983,652.16
  5. Step 5: Solve for x
    x = 257,983,652.16/18,218.34
  6. Step 6: Final answer
    x = 14,160.66

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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.