Home / 12,705.90-19,015.65-11,150.70

Finding the Fourth Proportional to 12,705.90, 19,015.65 and 11,150.70

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Solution

The fourth proportional to 12,705.90, 19,015.65 and 11,150.70 is: 16,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.90 : 19,015.65 = 11,150.70 : x
  2. Step 2: Convert to fraction form
    12,705.90/19,015.65 = 11,150.70/x
  3. Step 3: Cross multiply
    12,705.90x = 19,015.65 × 11,150.70
  4. Step 4: Simplify right side
    12,705.90x = 212,037,808.46
  5. Step 5: Solve for x
    x = 212,037,808.46/12,705.90
  6. Step 6: Final answer
    x = 16,688.14

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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.