Home / 28,513.19-39,344.76-15,764.65

Finding the Fourth Proportional to 28,513.19, 39,344.76 and 15,764.65

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Solution

The fourth proportional to 28,513.19, 39,344.76 and 15,764.65 is: 21,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.19 : 39,344.76 = 15,764.65 : x
  2. Step 2: Convert to fraction form
    28,513.19/39,344.76 = 15,764.65/x
  3. Step 3: Cross multiply
    28,513.19x = 39,344.76 × 15,764.65
  4. Step 4: Simplify right side
    28,513.19x = 620,256,272.37
  5. Step 5: Solve for x
    x = 620,256,272.37/28,513.19
  6. Step 6: Final answer
    x = 21,753.31

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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.