Home / 13,870.19-20,796.95-5,426.63

Finding the Fourth Proportional to 13,870.19, 20,796.95 and 5,426.63

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Solution

The fourth proportional to 13,870.19, 20,796.95 and 5,426.63 is: 8,136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.19 : 20,796.95 = 5,426.63 : x
  2. Step 2: Convert to fraction form
    13,870.19/20,796.95 = 5,426.63/x
  3. Step 3: Cross multiply
    13,870.19x = 20,796.95 × 5,426.63
  4. Step 4: Simplify right side
    13,870.19x = 112,857,221.66
  5. Step 5: Solve for x
    x = 112,857,221.66/13,870.19
  6. Step 6: Final answer
    x = 8,136.68

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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.