Home / 30,129.77-45,198.89-12,595.61

Finding the Fourth Proportional to 30,129.77, 45,198.89 and 12,595.61

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Solution

The fourth proportional to 30,129.77, 45,198.89 and 12,595.61 is: 18,895.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.77 : 45,198.89 = 12,595.61 : x
  2. Step 2: Convert to fraction form
    30,129.77/45,198.89 = 12,595.61/x
  3. Step 3: Cross multiply
    30,129.77x = 45,198.89 × 12,595.61
  4. Step 4: Simplify right side
    30,129.77x = 569,307,527.89
  5. Step 5: Solve for x
    x = 569,307,527.89/30,129.77
  6. Step 6: Final answer
    x = 18,895.18

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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.