Home / 25,803.15-38,670.89-18,711.15

Finding the Fourth Proportional to 25,803.15, 38,670.89 and 18,711.15

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Solution

The fourth proportional to 25,803.15, 38,670.89 and 18,711.15 is: 28,042.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,803.15 : 38,670.89 = 18,711.15 : x
  2. Step 2: Convert to fraction form
    25,803.15/38,670.89 = 18,711.15/x
  3. Step 3: Cross multiply
    25,803.15x = 38,670.89 × 18,711.15
  4. Step 4: Simplify right side
    25,803.15x = 723,576,729.87
  5. Step 5: Solve for x
    x = 723,576,729.87/25,803.15
  6. Step 6: Final answer
    x = 28,042.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.