Home / 18,719.33-25,815.78-12,341.39

Finding the Fourth Proportional to 18,719.33, 25,815.78 and 12,341.39

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Solution

The fourth proportional to 18,719.33, 25,815.78 and 12,341.39 is: 17,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.33 : 25,815.78 = 12,341.39 : x
  2. Step 2: Convert to fraction form
    18,719.33/25,815.78 = 12,341.39/x
  3. Step 3: Cross multiply
    18,719.33x = 25,815.78 × 12,341.39
  4. Step 4: Simplify right side
    18,719.33x = 318,602,480.06
  5. Step 5: Solve for x
    x = 318,602,480.06/18,719.33
  6. Step 6: Final answer
    x = 17,019.98

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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.