Home / 28,335.69-39,104.19-15,590.34

Finding the Fourth Proportional to 28,335.69, 39,104.19 and 15,590.34

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Solution

The fourth proportional to 28,335.69, 39,104.19 and 15,590.34 is: 21,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.69 : 39,104.19 = 15,590.34 : x
  2. Step 2: Convert to fraction form
    28,335.69/39,104.19 = 15,590.34/x
  3. Step 3: Cross multiply
    28,335.69x = 39,104.19 × 15,590.34
  4. Step 4: Simplify right side
    28,335.69x = 609,647,617.52
  5. Step 5: Solve for x
    x = 609,647,617.52/28,335.69
  6. Step 6: Final answer
    x = 21,515.19

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Half scale
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Double scale
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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.