Home / 15,358.64-21,193.20-8,644.12

Finding the Fourth Proportional to 15,358.64, 21,193.20 and 8,644.12

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Solution

The fourth proportional to 15,358.64, 21,193.20 and 8,644.12 is: 11,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.64 : 21,193.20 = 8,644.12 : x
  2. Step 2: Convert to fraction form
    15,358.64/21,193.20 = 8,644.12/x
  3. Step 3: Cross multiply
    15,358.64x = 21,193.20 × 8,644.12
  4. Step 4: Simplify right side
    15,358.64x = 183,196,563.98
  5. Step 5: Solve for x
    x = 183,196,563.98/15,358.64
  6. Step 6: Final answer
    x = 11,927.92

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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.