Home / 28,141.76-38,835.78-15,566.51

Finding the Fourth Proportional to 28,141.76, 38,835.78 and 15,566.51

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Solution

The fourth proportional to 28,141.76, 38,835.78 and 15,566.51 is: 21,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,141.76 : 38,835.78 = 15,566.51 : x
  2. Step 2: Convert to fraction form
    28,141.76/38,835.78 = 15,566.51/x
  3. Step 3: Cross multiply
    28,141.76x = 38,835.78 × 15,566.51
  4. Step 4: Simplify right side
    28,141.76x = 604,537,557.73
  5. Step 5: Solve for x
    x = 604,537,557.73/28,141.76
  6. Step 6: Final answer
    x = 21,481.87

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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.