Home / 12,928.16-19,379.28-5,528

Finding the Fourth Proportional to 12,928.16, 19,379.28 and 5,528

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Solution

The fourth proportional to 12,928.16, 19,379.28 and 5,528 is: 8,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.16 : 19,379.28 = 5,528 : x
  2. Step 2: Convert to fraction form
    12,928.16/19,379.28 = 5,528/x
  3. Step 3: Cross multiply
    12,928.16x = 19,379.28 × 5,528
  4. Step 4: Simplify right side
    12,928.16x = 107,128,659.84
  5. Step 5: Solve for x
    x = 107,128,659.84/12,928.16
  6. Step 6: Final answer
    x = 8,286.46

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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.