Home / 13,341.80-20,013.81-3,981.20

Finding the Fourth Proportional to 13,341.80, 20,013.81 and 3,981.20

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Solution

The fourth proportional to 13,341.80, 20,013.81 and 3,981.20 is: 5,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,341.80 : 20,013.81 = 3,981.20 : x
  2. Step 2: Convert to fraction form
    13,341.80/20,013.81 = 3,981.20/x
  3. Step 3: Cross multiply
    13,341.80x = 20,013.81 × 3,981.20
  4. Step 4: Simplify right side
    13,341.80x = 79,678,880.30
  5. Step 5: Solve for x
    x = 79,678,880.30/13,341.80
  6. Step 6: Final answer
    x = 5,972.13

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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.