Home / 18,490.28-25,516.52-10,106.78

Finding the Fourth Proportional to 18,490.28, 25,516.52 and 10,106.78

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Solution

The fourth proportional to 18,490.28, 25,516.52 and 10,106.78 is: 13,947.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.28 : 25,516.52 = 10,106.78 : x
  2. Step 2: Convert to fraction form
    18,490.28/25,516.52 = 10,106.78/x
  3. Step 3: Cross multiply
    18,490.28x = 25,516.52 × 10,106.78
  4. Step 4: Simplify right side
    18,490.28x = 257,889,854.01
  5. Step 5: Solve for x
    x = 257,889,854.01/18,490.28
  6. Step 6: Final answer
    x = 13,947.32

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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.