Home / 13,325.76-18,396.58-8,612.72

Finding the Fourth Proportional to 13,325.76, 18,396.58 and 8,612.72

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Solution

The fourth proportional to 13,325.76, 18,396.58 and 8,612.72 is: 11,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.76 : 18,396.58 = 8,612.72 : x
  2. Step 2: Convert to fraction form
    13,325.76/18,396.58 = 8,612.72/x
  3. Step 3: Cross multiply
    13,325.76x = 18,396.58 × 8,612.72
  4. Step 4: Simplify right side
    13,325.76x = 158,444,592.50
  5. Step 5: Solve for x
    x = 158,444,592.50/13,325.76
  6. Step 6: Final answer
    x = 11,890.10

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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.