Home / 28,336.55-39,103.88-15,590.21

Finding the Fourth Proportional to 28,336.55, 39,103.88 and 15,590.21

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Solution

The fourth proportional to 28,336.55, 39,103.88 and 15,590.21 is: 21,514.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,336.55 : 39,103.88 = 15,590.21 : x
  2. Step 2: Convert to fraction form
    28,336.55/39,103.88 = 15,590.21/x
  3. Step 3: Cross multiply
    28,336.55x = 39,103.88 × 15,590.21
  4. Step 4: Simplify right side
    28,336.55x = 609,637,427.54
  5. Step 5: Solve for x
    x = 609,637,427.54/28,336.55
  6. Step 6: Final answer
    x = 21,514.18

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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.