Home / 15,631.52-21,570.66-8,556.57

Finding the Fourth Proportional to 15,631.52, 21,570.66 and 8,556.57

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Solution

The fourth proportional to 15,631.52, 21,570.66 and 8,556.57 is: 11,807.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.52 : 21,570.66 = 8,556.57 : x
  2. Step 2: Convert to fraction form
    15,631.52/21,570.66 = 8,556.57/x
  3. Step 3: Cross multiply
    15,631.52x = 21,570.66 × 8,556.57
  4. Step 4: Simplify right side
    15,631.52x = 184,570,862.24
  5. Step 5: Solve for x
    x = 184,570,862.24/15,631.52
  6. Step 6: Final answer
    x = 11,807.61

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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.