Home / 12,438.83-17,166.83-9,289.55

Finding the Fourth Proportional to 12,438.83, 17,166.83 and 9,289.55

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Solution

The fourth proportional to 12,438.83, 17,166.83 and 9,289.55 is: 12,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.83 : 17,166.83 = 9,289.55 : x
  2. Step 2: Convert to fraction form
    12,438.83/17,166.83 = 9,289.55/x
  3. Step 3: Cross multiply
    12,438.83x = 17,166.83 × 9,289.55
  4. Step 4: Simplify right side
    12,438.83x = 159,472,079.18
  5. Step 5: Solve for x
    x = 159,472,079.18/12,438.83
  6. Step 6: Final answer
    x = 12,820.50

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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.