Home / 20,401.10-30,606.81-9,876.17

Finding the Fourth Proportional to 20,401.10, 30,606.81 and 9,876.17

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Solution

The fourth proportional to 20,401.10, 30,606.81 and 9,876.17 is: 14,816.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.10 : 30,606.81 = 9,876.17 : x
  2. Step 2: Convert to fraction form
    20,401.10/30,606.81 = 9,876.17/x
  3. Step 3: Cross multiply
    20,401.10x = 30,606.81 × 9,876.17
  4. Step 4: Simplify right side
    20,401.10x = 302,277,905.68
  5. Step 5: Solve for x
    x = 302,277,905.68/20,401.10
  6. Step 6: Final answer
    x = 14,816.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.