Home / 18,417.39-25,418.90-10,864.57

Finding the Fourth Proportional to 18,417.39, 25,418.90 and 10,864.57

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Solution

The fourth proportional to 18,417.39, 25,418.90 and 10,864.57 is: 14,994.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,417.39 : 25,418.90 = 10,864.57 : x
  2. Step 2: Convert to fraction form
    18,417.39/25,418.90 = 10,864.57/x
  3. Step 3: Cross multiply
    18,417.39x = 25,418.90 × 10,864.57
  4. Step 4: Simplify right side
    18,417.39x = 276,165,300.50
  5. Step 5: Solve for x
    x = 276,165,300.50/18,417.39
  6. Step 6: Final answer
    x = 14,994.81

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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.