Home / 18,678.34-25,740.66-13,363.90

Finding the Fourth Proportional to 18,678.34, 25,740.66 and 13,363.90

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Solution

The fourth proportional to 18,678.34, 25,740.66 and 13,363.90 is: 18,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.34 : 25,740.66 = 13,363.90 : x
  2. Step 2: Convert to fraction form
    18,678.34/25,740.66 = 13,363.90/x
  3. Step 3: Cross multiply
    18,678.34x = 25,740.66 × 13,363.90
  4. Step 4: Simplify right side
    18,678.34x = 343,995,606.17
  5. Step 5: Solve for x
    x = 343,995,606.17/18,678.34
  6. Step 6: Final answer
    x = 18,416.82

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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.