Home / 28,307.08-39,062.82-15,731.56

Finding the Fourth Proportional to 28,307.08, 39,062.82 and 15,731.56

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Solution

The fourth proportional to 28,307.08, 39,062.82 and 15,731.56 is: 21,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.08 : 39,062.82 = 15,731.56 : x
  2. Step 2: Convert to fraction form
    28,307.08/39,062.82 = 15,731.56/x
  3. Step 3: Cross multiply
    28,307.08x = 39,062.82 × 15,731.56
  4. Step 4: Simplify right side
    28,307.08x = 614,519,096.60
  5. Step 5: Solve for x
    x = 614,519,096.60/28,307.08
  6. Step 6: Final answer
    x = 21,709.02

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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.