Home / 13,426.47-20,133.84-6,758.74

Finding the Fourth Proportional to 13,426.47, 20,133.84 and 6,758.74

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Solution

The fourth proportional to 13,426.47, 20,133.84 and 6,758.74 is: 10,135.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.47 : 20,133.84 = 6,758.74 : x
  2. Step 2: Convert to fraction form
    13,426.47/20,133.84 = 6,758.74/x
  3. Step 3: Cross multiply
    13,426.47x = 20,133.84 × 6,758.74
  4. Step 4: Simplify right side
    13,426.47x = 136,079,421.27
  5. Step 5: Solve for x
    x = 136,079,421.27/13,426.47
  6. Step 6: Final answer
    x = 10,135.16

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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.