Home / 21,015.59-29,000.97-11,455.72

Finding the Fourth Proportional to 21,015.59, 29,000.97 and 11,455.72

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Solution

The fourth proportional to 21,015.59, 29,000.97 and 11,455.72 is: 15,808.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.59 : 29,000.97 = 11,455.72 : x
  2. Step 2: Convert to fraction form
    21,015.59/29,000.97 = 11,455.72/x
  3. Step 3: Cross multiply
    21,015.59x = 29,000.97 × 11,455.72
  4. Step 4: Simplify right side
    21,015.59x = 332,226,919.55
  5. Step 5: Solve for x
    x = 332,226,919.55/21,015.59
  6. Step 6: Final answer
    x = 15,808.60

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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.