Home / 22,631.89-31,210.31-13,555.81

Finding the Fourth Proportional to 22,631.89, 31,210.31 and 13,555.81

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Solution

The fourth proportional to 22,631.89, 31,210.31 and 13,555.81 is: 18,694.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,631.89 : 31,210.31 = 13,555.81 : x
  2. Step 2: Convert to fraction form
    22,631.89/31,210.31 = 13,555.81/x
  3. Step 3: Cross multiply
    22,631.89x = 31,210.31 × 13,555.81
  4. Step 4: Simplify right side
    22,631.89x = 423,080,876.35
  5. Step 5: Solve for x
    x = 423,080,876.35/22,631.89
  6. Step 6: Final answer
    x = 18,694.01

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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.