Home / 30,156.59-45,249.62-21,328.65

Finding the Fourth Proportional to 30,156.59, 45,249.62 and 21,328.65

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Solution

The fourth proportional to 30,156.59, 45,249.62 and 21,328.65 is: 32,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.59 : 45,249.62 = 21,328.65 : x
  2. Step 2: Convert to fraction form
    30,156.59/45,249.62 = 21,328.65/x
  3. Step 3: Cross multiply
    30,156.59x = 45,249.62 × 21,328.65
  4. Step 4: Simplify right side
    30,156.59x = 965,113,360.93
  5. Step 5: Solve for x
    x = 965,113,360.93/30,156.59
  6. Step 6: Final answer
    x = 32,003.40

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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.