Home / 30,129.92-41,554.64-21,206.96

Finding the Fourth Proportional to 30,129.92, 41,554.64 and 21,206.96

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Solution

The fourth proportional to 30,129.92, 41,554.64 and 21,206.96 is: 29,248.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.92 : 41,554.64 = 21,206.96 : x
  2. Step 2: Convert to fraction form
    30,129.92/41,554.64 = 21,206.96/x
  3. Step 3: Cross multiply
    30,129.92x = 41,554.64 × 21,206.96
  4. Step 4: Simplify right side
    30,129.92x = 881,247,588.29
  5. Step 5: Solve for x
    x = 881,247,588.29/30,129.92
  6. Step 6: Final answer
    x = 29,248.26

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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.