Home / 22,141.12-30,551.46-13,188.40

Finding the Fourth Proportional to 22,141.12, 30,551.46 and 13,188.40

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Solution

The fourth proportional to 22,141.12, 30,551.46 and 13,188.40 is: 18,198.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,141.12 : 30,551.46 = 13,188.40 : x
  2. Step 2: Convert to fraction form
    22,141.12/30,551.46 = 13,188.40/x
  3. Step 3: Cross multiply
    22,141.12x = 30,551.46 × 13,188.40
  4. Step 4: Simplify right side
    22,141.12x = 402,924,875.06
  5. Step 5: Solve for x
    x = 402,924,875.06/22,141.12
  6. Step 6: Final answer
    x = 18,198.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.