Home / 18,390.08-25,378.56-10,006.40

Finding the Fourth Proportional to 18,390.08, 25,378.56 and 10,006.40

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Solution

The fourth proportional to 18,390.08, 25,378.56 and 10,006.40 is: 13,808.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.08 : 25,378.56 = 10,006.40 : x
  2. Step 2: Convert to fraction form
    18,390.08/25,378.56 = 10,006.40/x
  3. Step 3: Cross multiply
    18,390.08x = 25,378.56 × 10,006.40
  4. Step 4: Simplify right side
    18,390.08x = 253,948,022.78
  5. Step 5: Solve for x
    x = 253,948,022.78/18,390.08
  6. Step 6: Final answer
    x = 13,808.97

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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.