Home / 18,217.11-25,139.70-10,259.46

Finding the Fourth Proportional to 18,217.11, 25,139.70 and 10,259.46

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Solution

The fourth proportional to 18,217.11, 25,139.70 and 10,259.46 is: 14,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.11 : 25,139.70 = 10,259.46 : x
  2. Step 2: Convert to fraction form
    18,217.11/25,139.70 = 10,259.46/x
  3. Step 3: Cross multiply
    18,217.11x = 25,139.70 × 10,259.46
  4. Step 4: Simplify right side
    18,217.11x = 257,919,746.56
  5. Step 5: Solve for x
    x = 257,919,746.56/18,217.11
  6. Step 6: Final answer
    x = 14,158.10

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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.