Home / 22,455.90-30,989.39-12,384.77

Finding the Fourth Proportional to 22,455.90, 30,989.39 and 12,384.77

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Solution

The fourth proportional to 22,455.90, 30,989.39 and 12,384.77 is: 17,091.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,455.90 : 30,989.39 = 12,384.77 : x
  2. Step 2: Convert to fraction form
    22,455.90/30,989.39 = 12,384.77/x
  3. Step 3: Cross multiply
    22,455.90x = 30,989.39 × 12,384.77
  4. Step 4: Simplify right side
    22,455.90x = 383,796,250.72
  5. Step 5: Solve for x
    x = 383,796,250.72/22,455.90
  6. Step 6: Final answer
    x = 17,091.11

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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.