Home / 30,111.89-45,195.84-15,331.86

Finding the Fourth Proportional to 30,111.89, 45,195.84 and 15,331.86

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Solution

The fourth proportional to 30,111.89, 45,195.84 and 15,331.86 is: 23,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.89 : 45,195.84 = 15,331.86 : x
  2. Step 2: Convert to fraction form
    30,111.89/45,195.84 = 15,331.86/x
  3. Step 3: Cross multiply
    30,111.89x = 45,195.84 × 15,331.86
  4. Step 4: Simplify right side
    30,111.89x = 692,936,291.46
  5. Step 5: Solve for x
    x = 692,936,291.46/30,111.89
  6. Step 6: Final answer
    x = 23,012.05

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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.