Home / 18,218.51-25,143.36-10,664.40

Finding the Fourth Proportional to 18,218.51, 25,143.36 and 10,664.40

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Solution

The fourth proportional to 18,218.51, 25,143.36 and 10,664.40 is: 14,717.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.51 : 25,143.36 = 10,664.40 : x
  2. Step 2: Convert to fraction form
    18,218.51/25,143.36 = 10,664.40/x
  3. Step 3: Cross multiply
    18,218.51x = 25,143.36 × 10,664.40
  4. Step 4: Simplify right side
    18,218.51x = 268,138,785.88
  5. Step 5: Solve for x
    x = 268,138,785.88/18,218.51
  6. Step 6: Final answer
    x = 14,717.93

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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.