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Finding the Fourth Proportional to 15,037.51, 20,751.01 and 8,231.35

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Solution

The fourth proportional to 15,037.51, 20,751.01 and 8,231.35 is: 11,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,037.51 : 20,751.01 = 8,231.35 : x
  2. Step 2: Convert to fraction form
    15,037.51/20,751.01 = 8,231.35/x
  3. Step 3: Cross multiply
    15,037.51x = 20,751.01 × 8,231.35
  4. Step 4: Simplify right side
    15,037.51x = 170,808,826.16
  5. Step 5: Solve for x
    x = 170,808,826.16/15,037.51
  6. Step 6: Final answer
    x = 11,358.85

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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.