Home / 21,781.74-30,058.58-11,845.74

Finding the Fourth Proportional to 21,781.74, 30,058.58 and 11,845.74

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Solution

The fourth proportional to 21,781.74, 30,058.58 and 11,845.74 is: 16,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.74 : 30,058.58 = 11,845.74 : x
  2. Step 2: Convert to fraction form
    21,781.74/30,058.58 = 11,845.74/x
  3. Step 3: Cross multiply
    21,781.74x = 30,058.58 × 11,845.74
  4. Step 4: Simplify right side
    21,781.74x = 356,066,123.45
  5. Step 5: Solve for x
    x = 356,066,123.45/21,781.74
  6. Step 6: Final answer
    x = 16,347.00

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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.