Home / 18,382.72-25,364.64-10,423.12

Finding the Fourth Proportional to 18,382.72, 25,364.64 and 10,423.12

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Solution

The fourth proportional to 18,382.72, 25,364.64 and 10,423.12 is: 14,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.72 : 25,364.64 = 10,423.12 : x
  2. Step 2: Convert to fraction form
    18,382.72/25,364.64 = 10,423.12/x
  3. Step 3: Cross multiply
    18,382.72x = 25,364.64 × 10,423.12
  4. Step 4: Simplify right side
    18,382.72x = 264,378,686.48
  5. Step 5: Solve for x
    x = 264,378,686.48/18,382.72
  6. Step 6: Final answer
    x = 14,381.91

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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.