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Finding the Fourth Proportional to 15,032.58, 20,735.89 and 9,928.14

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Solution

The fourth proportional to 15,032.58, 20,735.89 and 9,928.14 is: 13,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.58 : 20,735.89 = 9,928.14 : x
  2. Step 2: Convert to fraction form
    15,032.58/20,735.89 = 9,928.14/x
  3. Step 3: Cross multiply
    15,032.58x = 20,735.89 × 9,928.14
  4. Step 4: Simplify right side
    15,032.58x = 205,868,818.94
  5. Step 5: Solve for x
    x = 205,868,818.94/15,032.58
  6. Step 6: Final answer
    x = 13,694.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.