Home / 21,979.60-32,930.76-18,492.58

Finding the Fourth Proportional to 21,979.60, 32,930.76 and 18,492.58

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Solution

The fourth proportional to 21,979.60, 32,930.76 and 18,492.58 is: 27,706.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.60 : 32,930.76 = 18,492.58 : x
  2. Step 2: Convert to fraction form
    21,979.60/32,930.76 = 18,492.58/x
  3. Step 3: Cross multiply
    21,979.60x = 32,930.76 × 18,492.58
  4. Step 4: Simplify right side
    21,979.60x = 608,974,713.76
  5. Step 5: Solve for x
    x = 608,974,713.76/21,979.60
  6. Step 6: Final answer
    x = 27,706.36

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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.