Home / 19,207.60-26,518.72-15,679.20

Finding the Fourth Proportional to 19,207.60, 26,518.72 and 15,679.20

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Solution

The fourth proportional to 19,207.60, 26,518.72 and 15,679.20 is: 21,647.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.60 : 26,518.72 = 15,679.20 : x
  2. Step 2: Convert to fraction form
    19,207.60/26,518.72 = 15,679.20/x
  3. Step 3: Cross multiply
    19,207.60x = 26,518.72 × 15,679.20
  4. Step 4: Simplify right side
    19,207.60x = 415,792,314.62
  5. Step 5: Solve for x
    x = 415,792,314.62/19,207.60
  6. Step 6: Final answer
    x = 21,647.28

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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.