Home / 28,243.58-38,976.66-15,497.42

Finding the Fourth Proportional to 28,243.58, 38,976.66 and 15,497.42

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Solution

The fourth proportional to 28,243.58, 38,976.66 and 15,497.42 is: 21,386.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.58 : 38,976.66 = 15,497.42 : x
  2. Step 2: Convert to fraction form
    28,243.58/38,976.66 = 15,497.42/x
  3. Step 3: Cross multiply
    28,243.58x = 38,976.66 × 15,497.42
  4. Step 4: Simplify right side
    28,243.58x = 604,037,670.22
  5. Step 5: Solve for x
    x = 604,037,670.22/28,243.58
  6. Step 6: Final answer
    x = 21,386.72

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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.