Home / 28,266.56-39,006.30-15,690.56

Finding the Fourth Proportional to 28,266.56, 39,006.30 and 15,690.56

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Solution

The fourth proportional to 28,266.56, 39,006.30 and 15,690.56 is: 21,652.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.56 : 39,006.30 = 15,690.56 : x
  2. Step 2: Convert to fraction form
    28,266.56/39,006.30 = 15,690.56/x
  3. Step 3: Cross multiply
    28,266.56x = 39,006.30 × 15,690.56
  4. Step 4: Simplify right side
    28,266.56x = 612,030,690.53
  5. Step 5: Solve for x
    x = 612,030,690.53/28,266.56
  6. Step 6: Final answer
    x = 21,652.11

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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.