Home / 21,898.08-30,220.36-12,341.90

Finding the Fourth Proportional to 21,898.08, 30,220.36 and 12,341.90

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Solution

The fourth proportional to 21,898.08, 30,220.36 and 12,341.90 is: 17,032.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,898.08 : 30,220.36 = 12,341.90 : x
  2. Step 2: Convert to fraction form
    21,898.08/30,220.36 = 12,341.90/x
  3. Step 3: Cross multiply
    21,898.08x = 30,220.36 × 12,341.90
  4. Step 4: Simplify right side
    21,898.08x = 372,976,705.78
  5. Step 5: Solve for x
    x = 372,976,705.78/21,898.08
  6. Step 6: Final answer
    x = 17,032.39

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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.