Home / 21,459.78-32,195.88-8,973.36

Finding the Fourth Proportional to 21,459.78, 32,195.88 and 8,973.36

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Solution

The fourth proportional to 21,459.78, 32,195.88 and 8,973.36 is: 13,462.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.78 : 32,195.88 = 8,973.36 : x
  2. Step 2: Convert to fraction form
    21,459.78/32,195.88 = 8,973.36/x
  3. Step 3: Cross multiply
    21,459.78x = 32,195.88 × 8,973.36
  4. Step 4: Simplify right side
    21,459.78x = 288,905,221.76
  5. Step 5: Solve for x
    x = 288,905,221.76/21,459.78
  6. Step 6: Final answer
    x = 13,462.64

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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.