Home / 30,121.48-45,111.12-15,293.62

Finding the Fourth Proportional to 30,121.48, 45,111.12 and 15,293.62

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Solution

The fourth proportional to 30,121.48, 45,111.12 and 15,293.62 is: 22,904.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.48 : 45,111.12 = 15,293.62 : x
  2. Step 2: Convert to fraction form
    30,121.48/45,111.12 = 15,293.62/x
  3. Step 3: Cross multiply
    30,121.48x = 45,111.12 × 15,293.62
  4. Step 4: Simplify right side
    30,121.48x = 689,912,327.05
  5. Step 5: Solve for x
    x = 689,912,327.05/30,121.48
  6. Step 6: Final answer
    x = 22,904.33

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1.5x scale

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.