Home / 28,436.16-39,244.26-15,690.54

Finding the Fourth Proportional to 28,436.16, 39,244.26 and 15,690.54

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Solution

The fourth proportional to 28,436.16, 39,244.26 and 15,690.54 is: 21,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.16 : 39,244.26 = 15,690.54 : x
  2. Step 2: Convert to fraction form
    28,436.16/39,244.26 = 15,690.54/x
  3. Step 3: Cross multiply
    28,436.16x = 39,244.26 × 15,690.54
  4. Step 4: Simplify right side
    28,436.16x = 615,763,631.30
  5. Step 5: Solve for x
    x = 615,763,631.30/28,436.16
  6. Step 6: Final answer
    x = 21,654.25

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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.