Home / 22,620.36-31,216.86-13,666.08

Finding the Fourth Proportional to 22,620.36, 31,216.86 and 13,666.08

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Solution

The fourth proportional to 22,620.36, 31,216.86 and 13,666.08 is: 18,859.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.36 : 31,216.86 = 13,666.08 : x
  2. Step 2: Convert to fraction form
    22,620.36/31,216.86 = 13,666.08/x
  3. Step 3: Cross multiply
    22,620.36x = 31,216.86 × 13,666.08
  4. Step 4: Simplify right side
    22,620.36x = 426,612,106.11
  5. Step 5: Solve for x
    x = 426,612,106.11/22,620.36
  6. Step 6: Final answer
    x = 18,859.65

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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.