Home / 15,844.90-21,866.30-8,675.12

Finding the Fourth Proportional to 15,844.90, 21,866.30 and 8,675.12

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Solution

The fourth proportional to 15,844.90, 21,866.30 and 8,675.12 is: 11,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,844.90 : 21,866.30 = 8,675.12 : x
  2. Step 2: Convert to fraction form
    15,844.90/21,866.30 = 8,675.12/x
  3. Step 3: Cross multiply
    15,844.90x = 21,866.30 × 8,675.12
  4. Step 4: Simplify right side
    15,844.90x = 189,692,746.08
  5. Step 5: Solve for x
    x = 189,692,746.08/15,844.90
  6. Step 6: Final answer
    x = 11,971.85

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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.