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Finding the Fourth Proportional to 28,462.71, 42,695.73 and 8,741.46

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Solution

The fourth proportional to 28,462.71, 42,695.73 and 8,741.46 is: 13,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.71 : 42,695.73 = 8,741.46 : x
  2. Step 2: Convert to fraction form
    28,462.71/42,695.73 = 8,741.46/x
  3. Step 3: Cross multiply
    28,462.71x = 42,695.73 × 8,741.46
  4. Step 4: Simplify right side
    28,462.71x = 373,223,015.97
  5. Step 5: Solve for x
    x = 373,223,015.97/28,462.71
  6. Step 6: Final answer
    x = 13,112.70

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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.