Home / 30,169.80-45,246.60-12,641.40

Finding the Fourth Proportional to 30,169.80, 45,246.60 and 12,641.40

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Solution

The fourth proportional to 30,169.80, 45,246.60 and 12,641.40 is: 18,958.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169.80 : 45,246.60 = 12,641.40 : x
  2. Step 2: Convert to fraction form
    30,169.80/45,246.60 = 12,641.40/x
  3. Step 3: Cross multiply
    30,169.80x = 45,246.60 × 12,641.40
  4. Step 4: Simplify right side
    30,169.80x = 571,980,369.24
  5. Step 5: Solve for x
    x = 571,980,369.24/30,169.80
  6. Step 6: Final answer
    x = 18,958.71

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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.