Home / 18,785.81-25,925.24-10,402.31

Finding the Fourth Proportional to 18,785.81, 25,925.24 and 10,402.31

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Solution

The fourth proportional to 18,785.81, 25,925.24 and 10,402.31 is: 14,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,785.81 : 25,925.24 = 10,402.31 : x
  2. Step 2: Convert to fraction form
    18,785.81/25,925.24 = 10,402.31/x
  3. Step 3: Cross multiply
    18,785.81x = 25,925.24 × 10,402.31
  4. Step 4: Simplify right side
    18,785.81x = 269,682,474.12
  5. Step 5: Solve for x
    x = 269,682,474.12/18,785.81
  6. Step 6: Final answer
    x = 14,355.65

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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.