Home / 18,216.57-25,138.89-10,661.52

Finding the Fourth Proportional to 18,216.57, 25,138.89 and 10,661.52

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Solution

The fourth proportional to 18,216.57, 25,138.89 and 10,661.52 is: 14,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.57 : 25,138.89 = 10,661.52 : x
  2. Step 2: Convert to fraction form
    18,216.57/25,138.89 = 10,661.52/x
  3. Step 3: Cross multiply
    18,216.57x = 25,138.89 × 10,661.52
  4. Step 4: Simplify right side
    18,216.57x = 268,018,778.51
  5. Step 5: Solve for x
    x = 268,018,778.51/18,216.57
  6. Step 6: Final answer
    x = 14,712.91

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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.