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Finding the Fourth Proportional to 15,655.84, 21,611.84 and 9,367.04

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Solution

The fourth proportional to 15,655.84, 21,611.84 and 9,367.04 is: 12,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.84 : 21,611.84 = 9,367.04 : x
  2. Step 2: Convert to fraction form
    15,655.84/21,611.84 = 9,367.04/x
  3. Step 3: Cross multiply
    15,655.84x = 21,611.84 × 9,367.04
  4. Step 4: Simplify right side
    15,655.84x = 202,438,969.75
  5. Step 5: Solve for x
    x = 202,438,969.75/15,655.84
  6. Step 6: Final answer
    x = 12,930.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.