Home / 12,353.79-17,048.36-6,688.66

Finding the Fourth Proportional to 12,353.79, 17,048.36 and 6,688.66

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Solution

The fourth proportional to 12,353.79, 17,048.36 and 6,688.66 is: 9,230.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,353.79 : 17,048.36 = 6,688.66 : x
  2. Step 2: Convert to fraction form
    12,353.79/17,048.36 = 6,688.66/x
  3. Step 3: Cross multiply
    12,353.79x = 17,048.36 × 6,688.66
  4. Step 4: Simplify right side
    12,353.79x = 114,030,657.70
  5. Step 5: Solve for x
    x = 114,030,657.70/12,353.79
  6. Step 6: Final answer
    x = 9,230.42

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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.