Home / 21,827.54-30,125.63-12,877.25

Finding the Fourth Proportional to 21,827.54, 30,125.63 and 12,877.25

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Solution

The fourth proportional to 21,827.54, 30,125.63 and 12,877.25 is: 17,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.54 : 30,125.63 = 12,877.25 : x
  2. Step 2: Convert to fraction form
    21,827.54/30,125.63 = 12,877.25/x
  3. Step 3: Cross multiply
    21,827.54x = 30,125.63 × 12,877.25
  4. Step 4: Simplify right side
    21,827.54x = 387,935,150.48
  5. Step 5: Solve for x
    x = 387,935,150.48/21,827.54
  6. Step 6: Final answer
    x = 17,772.74

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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.