Home / 12,866.40-19,335.96-11,980.08

Finding the Fourth Proportional to 12,866.40, 19,335.96 and 11,980.08

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Solution

The fourth proportional to 12,866.40, 19,335.96 and 11,980.08 is: 18,003.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,866.40 : 19,335.96 = 11,980.08 : x
  2. Step 2: Convert to fraction form
    12,866.40/19,335.96 = 11,980.08/x
  3. Step 3: Cross multiply
    12,866.40x = 19,335.96 × 11,980.08
  4. Step 4: Simplify right side
    12,866.40x = 231,646,347.68
  5. Step 5: Solve for x
    x = 231,646,347.68/12,866.40
  6. Step 6: Final answer
    x = 18,003.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.