Home / 13,424.19-20,143.53-7,888.35

Finding the Fourth Proportional to 13,424.19, 20,143.53 and 7,888.35

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Solution

The fourth proportional to 13,424.19, 20,143.53 and 7,888.35 is: 11,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.19 : 20,143.53 = 7,888.35 : x
  2. Step 2: Convert to fraction form
    13,424.19/20,143.53 = 7,888.35/x
  3. Step 3: Cross multiply
    13,424.19x = 20,143.53 × 7,888.35
  4. Step 4: Simplify right side
    13,424.19x = 158,899,214.88
  5. Step 5: Solve for x
    x = 158,899,214.88/13,424.19
  6. Step 6: Final answer
    x = 11,836.78

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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.