Home / 15,385.64-21,231.50-8,671.23

Finding the Fourth Proportional to 15,385.64, 21,231.50 and 8,671.23

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Solution

The fourth proportional to 15,385.64, 21,231.50 and 8,671.23 is: 11,965.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.64 : 21,231.50 = 8,671.23 : x
  2. Step 2: Convert to fraction form
    15,385.64/21,231.50 = 8,671.23/x
  3. Step 3: Cross multiply
    15,385.64x = 21,231.50 × 8,671.23
  4. Step 4: Simplify right side
    15,385.64x = 184,103,176.39
  5. Step 5: Solve for x
    x = 184,103,176.39/15,385.64
  6. Step 6: Final answer
    x = 11,965.91

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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.