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Finding the Fourth Proportional to 12,705.68, 19,052.02 and 5,308.12

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Solution

The fourth proportional to 12,705.68, 19,052.02 and 5,308.12 is: 7,959.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.68 : 19,052.02 = 5,308.12 : x
  2. Step 2: Convert to fraction form
    12,705.68/19,052.02 = 5,308.12/x
  3. Step 3: Cross multiply
    12,705.68x = 19,052.02 × 5,308.12
  4. Step 4: Simplify right side
    12,705.68x = 101,130,408.40
  5. Step 5: Solve for x
    x = 101,130,408.40/12,705.68
  6. Step 6: Final answer
    x = 7,959.46

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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.