Home / 21,427.84-32,136.51-8,947.96

Finding the Fourth Proportional to 21,427.84, 32,136.51 and 8,947.96

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Solution

The fourth proportional to 21,427.84, 32,136.51 and 8,947.96 is: 13,419.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.84 : 32,136.51 = 8,947.96 : x
  2. Step 2: Convert to fraction form
    21,427.84/32,136.51 = 8,947.96/x
  3. Step 3: Cross multiply
    21,427.84x = 32,136.51 × 8,947.96
  4. Step 4: Simplify right side
    21,427.84x = 287,556,206.02
  5. Step 5: Solve for x
    x = 287,556,206.02/21,427.84
  6. Step 6: Final answer
    x = 13,419.75

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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.