Home / 12,005.80-16,569.10-6,629.20

Finding the Fourth Proportional to 12,005.80, 16,569.10 and 6,629.20

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Solution

The fourth proportional to 12,005.80, 16,569.10 and 6,629.20 is: 9,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.80 : 16,569.10 = 6,629.20 : x
  2. Step 2: Convert to fraction form
    12,005.80/16,569.10 = 6,629.20/x
  3. Step 3: Cross multiply
    12,005.80x = 16,569.10 × 6,629.20
  4. Step 4: Simplify right side
    12,005.80x = 109,839,877.72
  5. Step 5: Solve for x
    x = 109,839,877.72/12,005.80
  6. Step 6: Final answer
    x = 9,148.90

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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.