Home / 15,328.20-21,152.64-8,522.64

Finding the Fourth Proportional to 15,328.20, 21,152.64 and 8,522.64

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Solution

The fourth proportional to 15,328.20, 21,152.64 and 8,522.64 is: 11,761.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.20 : 21,152.64 = 8,522.64 : x
  2. Step 2: Convert to fraction form
    15,328.20/21,152.64 = 8,522.64/x
  3. Step 3: Cross multiply
    15,328.20x = 21,152.64 × 8,522.64
  4. Step 4: Simplify right side
    15,328.20x = 180,276,335.77
  5. Step 5: Solve for x
    x = 180,276,335.77/15,328.20
  6. Step 6: Final answer
    x = 11,761.09

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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.