Home / 15,442.07-21,311.14-8,728.32

Finding the Fourth Proportional to 15,442.07, 21,311.14 and 8,728.32

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Solution

The fourth proportional to 15,442.07, 21,311.14 and 8,728.32 is: 12,045.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.07 : 21,311.14 = 8,728.32 : x
  2. Step 2: Convert to fraction form
    15,442.07/21,311.14 = 8,728.32/x
  3. Step 3: Cross multiply
    15,442.07x = 21,311.14 × 8,728.32
  4. Step 4: Simplify right side
    15,442.07x = 186,010,449.48
  5. Step 5: Solve for x
    x = 186,010,449.48/15,442.07
  6. Step 6: Final answer
    x = 12,045.69

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Double scale
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Similar ratio
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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.