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Finding the Fourth Proportional to 12,750.81, 19,133.70 and 5,354.70

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Solution

The fourth proportional to 12,750.81, 19,133.70 and 5,354.70 is: 8,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.81 : 19,133.70 = 5,354.70 : x
  2. Step 2: Convert to fraction form
    12,750.81/19,133.70 = 5,354.70/x
  3. Step 3: Cross multiply
    12,750.81x = 19,133.70 × 5,354.70
  4. Step 4: Simplify right side
    12,750.81x = 102,455,223.39
  5. Step 5: Solve for x
    x = 102,455,223.39/12,750.81
  6. Step 6: Final answer
    x = 8,035.19

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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.