Home / 18,420.32-25,423.12-10,868.52

Finding the Fourth Proportional to 18,420.32, 25,423.12 and 10,868.52

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Solution

The fourth proportional to 18,420.32, 25,423.12 and 10,868.52 is: 15,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.32 : 25,423.12 = 10,868.52 : x
  2. Step 2: Convert to fraction form
    18,420.32/25,423.12 = 10,868.52/x
  3. Step 3: Cross multiply
    18,420.32x = 25,423.12 × 10,868.52
  4. Step 4: Simplify right side
    18,420.32x = 276,311,797.10
  5. Step 5: Solve for x
    x = 276,311,797.10/18,420.32
  6. Step 6: Final answer
    x = 15,000.38

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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.