Home / 12,281.12-16,930.77-10,385.09

Finding the Fourth Proportional to 12,281.12, 16,930.77 and 10,385.09

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Solution

The fourth proportional to 12,281.12, 16,930.77 and 10,385.09 is: 14,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.12 : 16,930.77 = 10,385.09 : x
  2. Step 2: Convert to fraction form
    12,281.12/16,930.77 = 10,385.09/x
  3. Step 3: Cross multiply
    12,281.12x = 16,930.77 × 10,385.09
  4. Step 4: Simplify right side
    12,281.12x = 175,827,612.55
  5. Step 5: Solve for x
    x = 175,827,612.55/12,281.12
  6. Step 6: Final answer
    x = 14,316.91

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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.