Home / 22,705.82-31,331.28-12,631.88

Finding the Fourth Proportional to 22,705.82, 31,331.28 and 12,631.88

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Solution

The fourth proportional to 22,705.82, 31,331.28 and 12,631.88 is: 17,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,705.82 : 31,331.28 = 12,631.88 : x
  2. Step 2: Convert to fraction form
    22,705.82/31,331.28 = 12,631.88/x
  3. Step 3: Cross multiply
    22,705.82x = 31,331.28 × 12,631.88
  4. Step 4: Simplify right side
    22,705.82x = 395,772,969.21
  5. Step 5: Solve for x
    x = 395,772,969.21/22,705.82
  6. Step 6: Final answer
    x = 17,430.46

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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.