Home / 22,690.08-31,311.36-12,618

Finding the Fourth Proportional to 22,690.08, 31,311.36 and 12,618

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Solution

The fourth proportional to 22,690.08, 31,311.36 and 12,618 is: 17,412.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,690.08 : 31,311.36 = 12,618 : x
  2. Step 2: Convert to fraction form
    22,690.08/31,311.36 = 12,618/x
  3. Step 3: Cross multiply
    22,690.08x = 31,311.36 × 12,618
  4. Step 4: Simplify right side
    22,690.08x = 395,086,740.48
  5. Step 5: Solve for x
    x = 395,086,740.48/22,690.08
  6. Step 6: Final answer
    x = 17,412.31

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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.