Home / 21,274.60-31,926.30-9,581.80

Finding the Fourth Proportional to 21,274.60, 31,926.30 and 9,581.80

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Solution

The fourth proportional to 21,274.60, 31,926.30 and 9,581.80 is: 14,379.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.60 : 31,926.30 = 9,581.80 : x
  2. Step 2: Convert to fraction form
    21,274.60/31,926.30 = 9,581.80/x
  3. Step 3: Cross multiply
    21,274.60x = 31,926.30 × 9,581.80
  4. Step 4: Simplify right side
    21,274.60x = 305,911,421.34
  5. Step 5: Solve for x
    x = 305,911,421.34/21,274.60
  6. Step 6: Final answer
    x = 14,379.19

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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.