Home / 30,160.65-45,236.79-21,127.41

Finding the Fourth Proportional to 30,160.65, 45,236.79 and 21,127.41

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Solution

The fourth proportional to 30,160.65, 45,236.79 and 21,127.41 is: 31,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,160.65 : 45,236.79 = 21,127.41 : x
  2. Step 2: Convert to fraction form
    30,160.65/45,236.79 = 21,127.41/x
  3. Step 3: Cross multiply
    30,160.65x = 45,236.79 × 21,127.41
  4. Step 4: Simplify right side
    30,160.65x = 955,736,209.41
  5. Step 5: Solve for x
    x = 955,736,209.41/30,160.65
  6. Step 6: Final answer
    x = 31,688.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.