Home / 18,815.08-25,966.34-10,431.40

Finding the Fourth Proportional to 18,815.08, 25,966.34 and 10,431.40

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Solution

The fourth proportional to 18,815.08, 25,966.34 and 10,431.40 is: 14,396.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.08 : 25,966.34 = 10,431.40 : x
  2. Step 2: Convert to fraction form
    18,815.08/25,966.34 = 10,431.40/x
  3. Step 3: Cross multiply
    18,815.08x = 25,966.34 × 10,431.40
  4. Step 4: Simplify right side
    18,815.08x = 270,865,279.08
  5. Step 5: Solve for x
    x = 270,865,279.08/18,815.08
  6. Step 6: Final answer
    x = 14,396.18

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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.