Home / 30,109.13-45,161.14-12,334.72

Finding the Fourth Proportional to 30,109.13, 45,161.14 and 12,334.72

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Solution

The fourth proportional to 30,109.13, 45,161.14 and 12,334.72 is: 18,501.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,109.13 : 45,161.14 = 12,334.72 : x
  2. Step 2: Convert to fraction form
    30,109.13/45,161.14 = 12,334.72/x
  3. Step 3: Cross multiply
    30,109.13x = 45,161.14 × 12,334.72
  4. Step 4: Simplify right side
    30,109.13x = 557,049,980.85
  5. Step 5: Solve for x
    x = 557,049,980.85/30,109.13
  6. Step 6: Final answer
    x = 18,501.03

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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.