Home / 12,421.29-17,141.43-6,756.06

Finding the Fourth Proportional to 12,421.29, 17,141.43 and 6,756.06

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Solution

The fourth proportional to 12,421.29, 17,141.43 and 6,756.06 is: 9,323.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.29 : 17,141.43 = 6,756.06 : x
  2. Step 2: Convert to fraction form
    12,421.29/17,141.43 = 6,756.06/x
  3. Step 3: Cross multiply
    12,421.29x = 17,141.43 × 6,756.06
  4. Step 4: Simplify right side
    12,421.29x = 115,808,529.57
  5. Step 5: Solve for x
    x = 115,808,529.57/12,421.29
  6. Step 6: Final answer
    x = 9,323.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.