Home / 21,898.35-30,220.56-12,342.04

Finding the Fourth Proportional to 21,898.35, 30,220.56 and 12,342.04

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Solution

The fourth proportional to 21,898.35, 30,220.56 and 12,342.04 is: 17,032.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.35 : 30,220.56 = 12,342.04 : x
  2. Step 2: Convert to fraction form
    21,898.35/30,220.56 = 12,342.04/x
  3. Step 3: Cross multiply
    21,898.35x = 30,220.56 × 12,342.04
  4. Step 4: Simplify right side
    21,898.35x = 372,983,284.79
  5. Step 5: Solve for x
    x = 372,983,284.79/21,898.35
  6. Step 6: Final answer
    x = 17,032.48

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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.