Home / 12,012.18-16,561.40-9,850.77

Finding the Fourth Proportional to 12,012.18, 16,561.40 and 9,850.77

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Solution

The fourth proportional to 12,012.18, 16,561.40 and 9,850.77 is: 13,581.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.18 : 16,561.40 = 9,850.77 : x
  2. Step 2: Convert to fraction form
    12,012.18/16,561.40 = 9,850.77/x
  3. Step 3: Cross multiply
    12,012.18x = 16,561.40 × 9,850.77
  4. Step 4: Simplify right side
    12,012.18x = 163,142,542.28
  5. Step 5: Solve for x
    x = 163,142,542.28/12,012.18
  6. Step 6: Final answer
    x = 13,581.43

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Double scale
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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.