Home / 30,180.43-45,270.65-12,411.01

Finding the Fourth Proportional to 30,180.43, 45,270.65 and 12,411.01

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Solution

The fourth proportional to 30,180.43, 45,270.65 and 12,411.01 is: 18,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,180.43 : 45,270.65 = 12,411.01 : x
  2. Step 2: Convert to fraction form
    30,180.43/45,270.65 = 12,411.01/x
  3. Step 3: Cross multiply
    30,180.43x = 45,270.65 × 12,411.01
  4. Step 4: Simplify right side
    30,180.43x = 561,854,489.86
  5. Step 5: Solve for x
    x = 561,854,489.86/30,180.43
  6. Step 6: Final answer
    x = 18,616.52

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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.