Home / 18,815.90-25,966.23-10,318.80

Finding the Fourth Proportional to 18,815.90, 25,966.23 and 10,318.80

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Solution

The fourth proportional to 18,815.90, 25,966.23 and 10,318.80 is: 14,240.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.90 : 25,966.23 = 10,318.80 : x
  2. Step 2: Convert to fraction form
    18,815.90/25,966.23 = 10,318.80/x
  3. Step 3: Cross multiply
    18,815.90x = 25,966.23 × 10,318.80
  4. Step 4: Simplify right side
    18,815.90x = 267,940,334.12
  5. Step 5: Solve for x
    x = 267,940,334.12/18,815.90
  6. Step 6: Final answer
    x = 14,240.10

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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.