Home / 14,101.80-21,128.40-9,168.90

Finding the Fourth Proportional to 14,101.80, 21,128.40 and 9,168.90

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Solution

The fourth proportional to 14,101.80, 21,128.40 and 9,168.90 is: 13,737.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,101.80 : 21,128.40 = 9,168.90 : x
  2. Step 2: Convert to fraction form
    14,101.80/21,128.40 = 9,168.90/x
  3. Step 3: Cross multiply
    14,101.80x = 21,128.40 × 9,168.90
  4. Step 4: Simplify right side
    14,101.80x = 193,724,186.76
  5. Step 5: Solve for x
    x = 193,724,186.76/14,101.80
  6. Step 6: Final answer
    x = 13,737.55

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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.