Home / 12,708.90-19,020.15-11,153.70

Finding the Fourth Proportional to 12,708.90, 19,020.15 and 11,153.70

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Solution

The fourth proportional to 12,708.90, 19,020.15 and 11,153.70 is: 16,692.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.90 : 19,020.15 = 11,153.70 : x
  2. Step 2: Convert to fraction form
    12,708.90/19,020.15 = 11,153.70/x
  3. Step 3: Cross multiply
    12,708.90x = 19,020.15 × 11,153.70
  4. Step 4: Simplify right side
    12,708.90x = 212,145,047.06
  5. Step 5: Solve for x
    x = 212,145,047.06/12,708.90
  6. Step 6: Final answer
    x = 16,692.64

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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.