Home / 21,781.14-30,058.56-12,350.32

Finding the Fourth Proportional to 21,781.14, 30,058.56 and 12,350.32

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Solution

The fourth proportional to 21,781.14, 30,058.56 and 12,350.32 is: 17,043.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.14 : 30,058.56 = 12,350.32 : x
  2. Step 2: Convert to fraction form
    21,781.14/30,058.56 = 12,350.32/x
  3. Step 3: Cross multiply
    21,781.14x = 30,058.56 × 12,350.32
  4. Step 4: Simplify right side
    21,781.14x = 371,232,834.74
  5. Step 5: Solve for x
    x = 371,232,834.74/21,781.14
  6. Step 6: Final answer
    x = 17,043.77

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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.