Home / 19,316.64-28,928.16-13,376.88

Finding the Fourth Proportional to 19,316.64, 28,928.16 and 13,376.88

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Solution

The fourth proportional to 19,316.64, 28,928.16 and 13,376.88 is: 20,032.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,316.64 : 28,928.16 = 13,376.88 : x
  2. Step 2: Convert to fraction form
    19,316.64/28,928.16 = 13,376.88/x
  3. Step 3: Cross multiply
    19,316.64x = 28,928.16 × 13,376.88
  4. Step 4: Simplify right side
    19,316.64x = 386,968,524.94
  5. Step 5: Solve for x
    x = 386,968,524.94/19,316.64
  6. Step 6: Final answer
    x = 20,032.91

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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.