Home / 18,786.68-25,925.64-10,403

Finding the Fourth Proportional to 18,786.68, 25,925.64 and 10,403

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Solution

The fourth proportional to 18,786.68, 25,925.64 and 10,403 is: 14,356.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.68 : 25,925.64 = 10,403 : x
  2. Step 2: Convert to fraction form
    18,786.68/25,925.64 = 10,403/x
  3. Step 3: Cross multiply
    18,786.68x = 25,925.64 × 10,403
  4. Step 4: Simplify right side
    18,786.68x = 269,704,432.92
  5. Step 5: Solve for x
    x = 269,704,432.92/18,786.68
  6. Step 6: Final answer
    x = 14,356.15

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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.