Home / 18,278.09-25,223.55-10,320.65

Finding the Fourth Proportional to 18,278.09, 25,223.55 and 10,320.65

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Solution

The fourth proportional to 18,278.09, 25,223.55 and 10,320.65 is: 14,242.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.09 : 25,223.55 = 10,320.65 : x
  2. Step 2: Convert to fraction form
    18,278.09/25,223.55 = 10,320.65/x
  3. Step 3: Cross multiply
    18,278.09x = 25,223.55 × 10,320.65
  4. Step 4: Simplify right side
    18,278.09x = 260,323,431.31
  5. Step 5: Solve for x
    x = 260,323,431.31/18,278.09
  6. Step 6: Final answer
    x = 14,242.38

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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.