Home / 12,103.66-16,710.87-9,870.90

Finding the Fourth Proportional to 12,103.66, 16,710.87 and 9,870.90

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Solution

The fourth proportional to 12,103.66, 16,710.87 and 9,870.90 is: 13,628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.66 : 16,710.87 = 9,870.90 : x
  2. Step 2: Convert to fraction form
    12,103.66/16,710.87 = 9,870.90/x
  3. Step 3: Cross multiply
    12,103.66x = 16,710.87 × 9,870.90
  4. Step 4: Simplify right side
    12,103.66x = 164,951,326.68
  5. Step 5: Solve for x
    x = 164,951,326.68/12,103.66
  6. Step 6: Final answer
    x = 13,628.22

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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.