Home / 28,808.39-39,747.30-18,751.63

Finding the Fourth Proportional to 28,808.39, 39,747.30 and 18,751.63

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Solution

The fourth proportional to 28,808.39, 39,747.30 and 18,751.63 is: 25,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,808.39 : 39,747.30 = 18,751.63 : x
  2. Step 2: Convert to fraction form
    28,808.39/39,747.30 = 18,751.63/x
  3. Step 3: Cross multiply
    28,808.39x = 39,747.30 × 18,751.63
  4. Step 4: Simplify right side
    28,808.39x = 745,326,663.10
  5. Step 5: Solve for x
    x = 745,326,663.10/28,808.39
  6. Step 6: Final answer
    x = 25,871.86

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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.