Home / 45,031.64-67,550.83-13,439.21

Finding the Fourth Proportional to 45,031.64, 67,550.83 and 13,439.21

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Solution

The fourth proportional to 45,031.64, 67,550.83 and 13,439.21 is: 20,159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,031.64 : 67,550.83 = 13,439.21 : x
  2. Step 2: Convert to fraction form
    45,031.64/67,550.83 = 13,439.21/x
  3. Step 3: Cross multiply
    45,031.64x = 67,550.83 × 13,439.21
  4. Step 4: Simplify right side
    45,031.64x = 907,829,418.69
  5. Step 5: Solve for x
    x = 907,829,418.69/45,031.64
  6. Step 6: Final answer
    x = 20,159.81

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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.