Home / 21,182.72-29,232-11,751.32

Finding the Fourth Proportional to 21,182.72, 29,232 and 11,751.32

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Solution

The fourth proportional to 21,182.72, 29,232 and 11,751.32 is: 16,216.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.72 : 29,232 = 11,751.32 : x
  2. Step 2: Convert to fraction form
    21,182.72/29,232 = 11,751.32/x
  3. Step 3: Cross multiply
    21,182.72x = 29,232 × 11,751.32
  4. Step 4: Simplify right side
    21,182.72x = 343,514,586.24
  5. Step 5: Solve for x
    x = 343,514,586.24/21,182.72
  6. Step 6: Final answer
    x = 16,216.74

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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.