Home / 21,930.48-30,262.68-12,370.32

Finding the Fourth Proportional to 21,930.48, 30,262.68 and 12,370.32

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Solution

The fourth proportional to 21,930.48, 30,262.68 and 12,370.32 is: 17,070.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.48 : 30,262.68 = 12,370.32 : x
  2. Step 2: Convert to fraction form
    21,930.48/30,262.68 = 12,370.32/x
  3. Step 3: Cross multiply
    21,930.48x = 30,262.68 × 12,370.32
  4. Step 4: Simplify right side
    21,930.48x = 374,359,035.66
  5. Step 5: Solve for x
    x = 374,359,035.66/21,930.48
  6. Step 6: Final answer
    x = 17,070.26

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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.