Home / 21,788.22-32,666.40-6,988.72

Finding the Fourth Proportional to 21,788.22, 32,666.40 and 6,988.72

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Solution

The fourth proportional to 21,788.22, 32,666.40 and 6,988.72 is: 10,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.22 : 32,666.40 = 6,988.72 : x
  2. Step 2: Convert to fraction form
    21,788.22/32,666.40 = 6,988.72/x
  3. Step 3: Cross multiply
    21,788.22x = 32,666.40 × 6,988.72
  4. Step 4: Simplify right side
    21,788.22x = 228,296,323.01
  5. Step 5: Solve for x
    x = 228,296,323.01/21,788.22
  6. Step 6: Final answer
    x = 10,477.97

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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.