Home / 22,618.58-31,209.60-13,660.08

Finding the Fourth Proportional to 22,618.58, 31,209.60 and 13,660.08

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Solution

The fourth proportional to 22,618.58, 31,209.60 and 13,660.08 is: 18,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,618.58 : 31,209.60 = 13,660.08 : x
  2. Step 2: Convert to fraction form
    22,618.58/31,209.60 = 13,660.08/x
  3. Step 3: Cross multiply
    22,618.58x = 31,209.60 × 13,660.08
  4. Step 4: Simplify right side
    22,618.58x = 426,325,632.77
  5. Step 5: Solve for x
    x = 426,325,632.77/22,618.58
  6. Step 6: Final answer
    x = 18,848.47

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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.