Home / 12,880.34-17,777.15-9,353.81

Finding the Fourth Proportional to 12,880.34, 17,777.15 and 9,353.81

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Solution

The fourth proportional to 12,880.34, 17,777.15 and 9,353.81 is: 12,909.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.34 : 17,777.15 = 9,353.81 : x
  2. Step 2: Convert to fraction form
    12,880.34/17,777.15 = 9,353.81/x
  3. Step 3: Cross multiply
    12,880.34x = 17,777.15 × 9,353.81
  4. Step 4: Simplify right side
    12,880.34x = 166,283,947.79
  5. Step 5: Solve for x
    x = 166,283,947.79/12,880.34
  6. Step 6: Final answer
    x = 12,909.91

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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.