Home / 56,196.40-84,261.76-21,138.80

Finding the Fourth Proportional to 56,196.40, 84,261.76 and 21,138.80

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Solution

The fourth proportional to 56,196.40, 84,261.76 and 21,138.80 is: 31,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,196.40 : 84,261.76 = 21,138.80 : x
  2. Step 2: Convert to fraction form
    56,196.40/84,261.76 = 21,138.80/x
  3. Step 3: Cross multiply
    56,196.40x = 84,261.76 × 21,138.80
  4. Step 4: Simplify right side
    56,196.40x = 1,781,192,492.29
  5. Step 5: Solve for x
    x = 1,781,192,492.29/56,196.40
  6. Step 6: Final answer
    x = 31,695.85

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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.