Home / 12,330.31-17,011.68-7,021.36

Finding the Fourth Proportional to 12,330.31, 17,011.68 and 7,021.36

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Solution

The fourth proportional to 12,330.31, 17,011.68 and 7,021.36 is: 9,687.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.31 : 17,011.68 = 7,021.36 : x
  2. Step 2: Convert to fraction form
    12,330.31/17,011.68 = 7,021.36/x
  3. Step 3: Cross multiply
    12,330.31x = 17,011.68 × 7,021.36
  4. Step 4: Simplify right side
    12,330.31x = 119,445,129.48
  5. Step 5: Solve for x
    x = 119,445,129.48/12,330.31
  6. Step 6: Final answer
    x = 9,687.11

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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.