Home / 12,289.09-16,947.70-9,110.31

Finding the Fourth Proportional to 12,289.09, 16,947.70 and 9,110.31

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Solution

The fourth proportional to 12,289.09, 16,947.70 and 9,110.31 is: 12,563.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.09 : 16,947.70 = 9,110.31 : x
  2. Step 2: Convert to fraction form
    12,289.09/16,947.70 = 9,110.31/x
  3. Step 3: Cross multiply
    12,289.09x = 16,947.70 × 9,110.31
  4. Step 4: Simplify right side
    12,289.09x = 154,398,800.79
  5. Step 5: Solve for x
    x = 154,398,800.79/12,289.09
  6. Step 6: Final answer
    x = 12,563.89

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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.