Home / 18,664.80-25,757.20-10,281.12

Finding the Fourth Proportional to 18,664.80, 25,757.20 and 10,281.12

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Solution

The fourth proportional to 18,664.80, 25,757.20 and 10,281.12 is: 14,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.80 : 25,757.20 = 10,281.12 : x
  2. Step 2: Convert to fraction form
    18,664.80/25,757.20 = 10,281.12/x
  3. Step 3: Cross multiply
    18,664.80x = 25,757.20 × 10,281.12
  4. Step 4: Simplify right side
    18,664.80x = 264,812,864.06
  5. Step 5: Solve for x
    x = 264,812,864.06/18,664.80
  6. Step 6: Final answer
    x = 14,187.82

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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.