Home / 30,134.29-45,190.95-12,359.90

Finding the Fourth Proportional to 30,134.29, 45,190.95 and 12,359.90

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Solution

The fourth proportional to 30,134.29, 45,190.95 and 12,359.90 is: 18,535.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,134.29 : 45,190.95 = 12,359.90 : x
  2. Step 2: Convert to fraction form
    30,134.29/45,190.95 = 12,359.90/x
  3. Step 3: Cross multiply
    30,134.29x = 45,190.95 × 12,359.90
  4. Step 4: Simplify right side
    30,134.29x = 558,555,561.11
  5. Step 5: Solve for x
    x = 558,555,561.11/30,134.29
  6. Step 6: Final answer
    x = 18,535.55

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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.