Home / 15,868.72-21,899.40-9,156.64

Finding the Fourth Proportional to 15,868.72, 21,899.40 and 9,156.64

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Solution

The fourth proportional to 15,868.72, 21,899.40 and 9,156.64 is: 12,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.72 : 21,899.40 = 9,156.64 : x
  2. Step 2: Convert to fraction form
    15,868.72/21,899.40 = 9,156.64/x
  3. Step 3: Cross multiply
    15,868.72x = 21,899.40 × 9,156.64
  4. Step 4: Simplify right side
    15,868.72x = 200,524,922.02
  5. Step 5: Solve for x
    x = 200,524,922.02/15,868.72
  6. Step 6: Final answer
    x = 12,636.49

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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.