Home / 15,612.09-21,538.35-8,896.47

Finding the Fourth Proportional to 15,612.09, 21,538.35 and 8,896.47

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Solution

The fourth proportional to 15,612.09, 21,538.35 and 8,896.47 is: 12,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.09 : 21,538.35 = 8,896.47 : x
  2. Step 2: Convert to fraction form
    15,612.09/21,538.35 = 8,896.47/x
  3. Step 3: Cross multiply
    15,612.09x = 21,538.35 × 8,896.47
  4. Step 4: Simplify right side
    15,612.09x = 191,615,284.62
  5. Step 5: Solve for x
    x = 191,615,284.62/15,612.09
  6. Step 6: Final answer
    x = 12,273.52

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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.