Home / 15,359.08-21,193.78-8,644.57

Finding the Fourth Proportional to 15,359.08, 21,193.78 and 8,644.57

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Solution

The fourth proportional to 15,359.08, 21,193.78 and 8,644.57 is: 11,928.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.08 : 21,193.78 = 8,644.57 : x
  2. Step 2: Convert to fraction form
    15,359.08/21,193.78 = 8,644.57/x
  3. Step 3: Cross multiply
    15,359.08x = 21,193.78 × 8,644.57
  4. Step 4: Simplify right side
    15,359.08x = 183,211,114.77
  5. Step 5: Solve for x
    x = 183,211,114.77/15,359.08
  6. Step 6: Final answer
    x = 11,928.52

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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.