Home / 13,346.63-20,022.78-3,987.38

Finding the Fourth Proportional to 13,346.63, 20,022.78 and 3,987.38

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Solution

The fourth proportional to 13,346.63, 20,022.78 and 3,987.38 is: 5,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,346.63 : 20,022.78 = 3,987.38 : x
  2. Step 2: Convert to fraction form
    13,346.63/20,022.78 = 3,987.38/x
  3. Step 3: Cross multiply
    13,346.63x = 20,022.78 × 3,987.38
  4. Step 4: Simplify right side
    13,346.63x = 79,838,332.40
  5. Step 5: Solve for x
    x = 79,838,332.40/13,346.63
  6. Step 6: Final answer
    x = 5,981.91

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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.