Home / 22,239.40-30,685.36-13,285.16

Finding the Fourth Proportional to 22,239.40, 30,685.36 and 13,285.16

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Solution

The fourth proportional to 22,239.40, 30,685.36 and 13,285.16 is: 18,330.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.40 : 30,685.36 = 13,285.16 : x
  2. Step 2: Convert to fraction form
    22,239.40/30,685.36 = 13,285.16/x
  3. Step 3: Cross multiply
    22,239.40x = 30,685.36 × 13,285.16
  4. Step 4: Simplify right side
    22,239.40x = 407,659,917.26
  5. Step 5: Solve for x
    x = 407,659,917.26/22,239.40
  6. Step 6: Final answer
    x = 18,330.53

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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.