Home / 21,866.08-30,177.80-12,436.08

Finding the Fourth Proportional to 21,866.08, 30,177.80 and 12,436.08

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Solution

The fourth proportional to 21,866.08, 30,177.80 and 12,436.08 is: 17,163.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.08 : 30,177.80 = 12,436.08 : x
  2. Step 2: Convert to fraction form
    21,866.08/30,177.80 = 12,436.08/x
  3. Step 3: Cross multiply
    21,866.08x = 30,177.80 × 12,436.08
  4. Step 4: Simplify right side
    21,866.08x = 375,293,535.02
  5. Step 5: Solve for x
    x = 375,293,535.02/21,866.08
  6. Step 6: Final answer
    x = 17,163.27

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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.