Home / 13,278.21-19,888.64-6,247.69

Finding the Fourth Proportional to 13,278.21, 19,888.64 and 6,247.69

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Solution

The fourth proportional to 13,278.21, 19,888.64 and 6,247.69 is: 9,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.21 : 19,888.64 = 6,247.69 : x
  2. Step 2: Convert to fraction form
    13,278.21/19,888.64 = 6,247.69/x
  3. Step 3: Cross multiply
    13,278.21x = 19,888.64 × 6,247.69
  4. Step 4: Simplify right side
    13,278.21x = 124,257,957.80
  5. Step 5: Solve for x
    x = 124,257,957.80/13,278.21
  6. Step 6: Final answer
    x = 9,358.04

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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.