Home / 13,278.24-19,920.96-5,487.84

Finding the Fourth Proportional to 13,278.24, 19,920.96 and 5,487.84

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Solution

The fourth proportional to 13,278.24, 19,920.96 and 5,487.84 is: 8,233.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.24 : 19,920.96 = 5,487.84 : x
  2. Step 2: Convert to fraction form
    13,278.24/19,920.96 = 5,487.84/x
  3. Step 3: Cross multiply
    13,278.24x = 19,920.96 × 5,487.84
  4. Step 4: Simplify right side
    13,278.24x = 109,323,041.13
  5. Step 5: Solve for x
    x = 109,323,041.13/13,278.24
  6. Step 6: Final answer
    x = 8,233.25

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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.