Home / 30,146.10-45,155.34-19,047.12

Finding the Fourth Proportional to 30,146.10, 45,155.34 and 19,047.12

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Solution

The fourth proportional to 30,146.10, 45,155.34 and 19,047.12 is: 28,530.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,146.10 : 45,155.34 = 19,047.12 : x
  2. Step 2: Convert to fraction form
    30,146.10/45,155.34 = 19,047.12/x
  3. Step 3: Cross multiply
    30,146.10x = 45,155.34 × 19,047.12
  4. Step 4: Simplify right side
    30,146.10x = 860,079,179.62
  5. Step 5: Solve for x
    x = 860,079,179.62/30,146.10
  6. Step 6: Final answer
    x = 28,530.36

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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.