Home / 30,445.20-45,667.40-8,260.65

Finding the Fourth Proportional to 30,445.20, 45,667.40 and 8,260.65

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Solution

The fourth proportional to 30,445.20, 45,667.40 and 8,260.65 is: 12,390.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,445.20 : 45,667.40 = 8,260.65 : x
  2. Step 2: Convert to fraction form
    30,445.20/45,667.40 = 8,260.65/x
  3. Step 3: Cross multiply
    30,445.20x = 45,667.40 × 8,260.65
  4. Step 4: Simplify right side
    30,445.20x = 377,242,366.51
  5. Step 5: Solve for x
    x = 377,242,366.51/30,445.20
  6. Step 6: Final answer
    x = 12,390.87

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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.