Home / 11,425.32-15,766.83-6,389.55

Finding the Fourth Proportional to 11,425.32, 15,766.83 and 6,389.55

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Solution

The fourth proportional to 11,425.32, 15,766.83 and 6,389.55 is: 8,817.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.32 : 15,766.83 = 6,389.55 : x
  2. Step 2: Convert to fraction form
    11,425.32/15,766.83 = 6,389.55/x
  3. Step 3: Cross multiply
    11,425.32x = 15,766.83 × 6,389.55
  4. Step 4: Simplify right side
    11,425.32x = 100,742,948.63
  5. Step 5: Solve for x
    x = 100,742,948.63/11,425.32
  6. Step 6: Final answer
    x = 8,817.52

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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.