Home / 15,384.66-21,230.82-8,671.92

Finding the Fourth Proportional to 15,384.66, 21,230.82 and 8,671.92

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Solution

The fourth proportional to 15,384.66, 21,230.82 and 8,671.92 is: 11,967.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.66 : 21,230.82 = 8,671.92 : x
  2. Step 2: Convert to fraction form
    15,384.66/21,230.82 = 8,671.92/x
  3. Step 3: Cross multiply
    15,384.66x = 21,230.82 × 8,671.92
  4. Step 4: Simplify right side
    15,384.66x = 184,111,972.57
  5. Step 5: Solve for x
    x = 184,111,972.57/15,384.66
  6. Step 6: Final answer
    x = 11,967.24

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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.