Home / 28,158.82-38,860.38-15,583.57

Finding the Fourth Proportional to 28,158.82, 38,860.38 and 15,583.57

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Solution

The fourth proportional to 28,158.82, 38,860.38 and 15,583.57 is: 21,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.82 : 38,860.38 = 15,583.57 : x
  2. Step 2: Convert to fraction form
    28,158.82/38,860.38 = 15,583.57/x
  3. Step 3: Cross multiply
    28,158.82x = 38,860.38 × 15,583.57
  4. Step 4: Simplify right side
    28,158.82x = 605,583,451.96
  5. Step 5: Solve for x
    x = 605,583,451.96/28,158.82
  6. Step 6: Final answer
    x = 21,506.00

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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.