Home / 28,266.12-39,007.44-15,690.87

Finding the Fourth Proportional to 28,266.12, 39,007.44 and 15,690.87

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Solution

The fourth proportional to 28,266.12, 39,007.44 and 15,690.87 is: 21,653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.12 : 39,007.44 = 15,690.87 : x
  2. Step 2: Convert to fraction form
    28,266.12/39,007.44 = 15,690.87/x
  3. Step 3: Cross multiply
    28,266.12x = 39,007.44 × 15,690.87
  4. Step 4: Simplify right side
    28,266.12x = 612,060,670.07
  5. Step 5: Solve for x
    x = 612,060,670.07/28,266.12
  6. Step 6: Final answer
    x = 21,653.51

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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.