Home / 12,789.74-17,654.64-9,459.36

Finding the Fourth Proportional to 12,789.74, 17,654.64 and 9,459.36

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Solution

The fourth proportional to 12,789.74, 17,654.64 and 9,459.36 is: 13,057.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.74 : 17,654.64 = 9,459.36 : x
  2. Step 2: Convert to fraction form
    12,789.74/17,654.64 = 9,459.36/x
  3. Step 3: Cross multiply
    12,789.74x = 17,654.64 × 9,459.36
  4. Step 4: Simplify right side
    12,789.74x = 167,001,595.43
  5. Step 5: Solve for x
    x = 167,001,595.43/12,789.74
  6. Step 6: Final answer
    x = 13,057.47

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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.