Home / 28,158.12-38,857.98-15,583.56

Finding the Fourth Proportional to 28,158.12, 38,857.98 and 15,583.56

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Solution

The fourth proportional to 28,158.12, 38,857.98 and 15,583.56 is: 21,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.12 : 38,857.98 = 15,583.56 : x
  2. Step 2: Convert to fraction form
    28,158.12/38,857.98 = 15,583.56/x
  3. Step 3: Cross multiply
    28,158.12x = 38,857.98 × 15,583.56
  4. Step 4: Simplify right side
    28,158.12x = 605,545,662.81
  5. Step 5: Solve for x
    x = 605,545,662.81/28,158.12
  6. Step 6: Final answer
    x = 21,505.19

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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.