Home / 13,807.16-20,710.74-3,418.91

Finding the Fourth Proportional to 13,807.16, 20,710.74 and 3,418.91

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Solution

The fourth proportional to 13,807.16, 20,710.74 and 3,418.91 is: 5,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.16 : 20,710.74 = 3,418.91 : x
  2. Step 2: Convert to fraction form
    13,807.16/20,710.74 = 3,418.91/x
  3. Step 3: Cross multiply
    13,807.16x = 20,710.74 × 3,418.91
  4. Step 4: Simplify right side
    13,807.16x = 70,808,052.54
  5. Step 5: Solve for x
    x = 70,808,052.54/13,807.16
  6. Step 6: Final answer
    x = 5,128.36

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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.