Home / 30,377.90-45,530.40-15,579.20

Finding the Fourth Proportional to 30,377.90, 45,530.40 and 15,579.20

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Solution

The fourth proportional to 30,377.90, 45,530.40 and 15,579.20 is: 23,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,377.90 : 45,530.40 = 15,579.20 : x
  2. Step 2: Convert to fraction form
    30,377.90/45,530.40 = 15,579.20/x
  3. Step 3: Cross multiply
    30,377.90x = 45,530.40 × 15,579.20
  4. Step 4: Simplify right side
    30,377.90x = 709,327,207.68
  5. Step 5: Solve for x
    x = 709,327,207.68/30,377.90
  6. Step 6: Final answer
    x = 23,350.11

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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.