Home / 15,912.15-21,938.50-9,941.64

Finding the Fourth Proportional to 15,912.15, 21,938.50 and 9,941.64

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Solution

The fourth proportional to 15,912.15, 21,938.50 and 9,941.64 is: 13,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.15 : 21,938.50 = 9,941.64 : x
  2. Step 2: Convert to fraction form
    15,912.15/21,938.50 = 9,941.64/x
  3. Step 3: Cross multiply
    15,912.15x = 21,938.50 × 9,941.64
  4. Step 4: Simplify right side
    15,912.15x = 218,104,543.38
  5. Step 5: Solve for x
    x = 218,104,543.38/15,912.15
  6. Step 6: Final answer
    x = 13,706.80

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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.