Home / 28,805.39-39,743.16-18,748.63

Finding the Fourth Proportional to 28,805.39, 39,743.16 and 18,748.63

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Solution

The fourth proportional to 28,805.39, 39,743.16 and 18,748.63 is: 25,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,805.39 : 39,743.16 = 18,748.63 : x
  2. Step 2: Convert to fraction form
    28,805.39/39,743.16 = 18,748.63/x
  3. Step 3: Cross multiply
    28,805.39x = 39,743.16 × 18,748.63
  4. Step 4: Simplify right side
    28,805.39x = 745,129,781.24
  5. Step 5: Solve for x
    x = 745,129,781.24/28,805.39
  6. Step 6: Final answer
    x = 25,867.72

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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.