Home / 20,842.02-28,775.91-12,346.89

Finding the Fourth Proportional to 20,842.02, 28,775.91 and 12,346.89

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Solution

The fourth proportional to 20,842.02, 28,775.91 and 12,346.89 is: 17,046.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.02 : 28,775.91 = 12,346.89 : x
  2. Step 2: Convert to fraction form
    20,842.02/28,775.91 = 12,346.89/x
  3. Step 3: Cross multiply
    20,842.02x = 28,775.91 × 12,346.89
  4. Step 4: Simplify right side
    20,842.02x = 355,292,995.42
  5. Step 5: Solve for x
    x = 355,292,995.42/20,842.02
  6. Step 6: Final answer
    x = 17,046.96

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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.