Home / 21,227.60-31,875.40-16,881.20

Finding the Fourth Proportional to 21,227.60, 31,875.40 and 16,881.20

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Solution

The fourth proportional to 21,227.60, 31,875.40 and 16,881.20 is: 25,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.60 : 31,875.40 = 16,881.20 : x
  2. Step 2: Convert to fraction form
    21,227.60/31,875.40 = 16,881.20/x
  3. Step 3: Cross multiply
    21,227.60x = 31,875.40 × 16,881.20
  4. Step 4: Simplify right side
    21,227.60x = 538,095,002.48
  5. Step 5: Solve for x
    x = 538,095,002.48/21,227.60
  6. Step 6: Final answer
    x = 25,348.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.