Home / 21,172.08-31,746.96-11,308.68

Finding the Fourth Proportional to 21,172.08, 31,746.96 and 11,308.68

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Solution

The fourth proportional to 21,172.08, 31,746.96 and 11,308.68 is: 16,957.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.08 : 31,746.96 = 11,308.68 : x
  2. Step 2: Convert to fraction form
    21,172.08/31,746.96 = 11,308.68/x
  3. Step 3: Cross multiply
    21,172.08x = 31,746.96 × 11,308.68
  4. Step 4: Simplify right side
    21,172.08x = 359,016,211.61
  5. Step 5: Solve for x
    x = 359,016,211.61/21,172.08
  6. Step 6: Final answer
    x = 16,957.06

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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.