Home / 30,131.88-45,179.59-13,488.81

Finding the Fourth Proportional to 30,131.88, 45,179.59 and 13,488.81

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Solution

The fourth proportional to 30,131.88, 45,179.59 and 13,488.81 is: 20,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.88 : 45,179.59 = 13,488.81 : x
  2. Step 2: Convert to fraction form
    30,131.88/45,179.59 = 13,488.81/x
  3. Step 3: Cross multiply
    30,131.88x = 45,179.59 × 13,488.81
  4. Step 4: Simplify right side
    30,131.88x = 609,418,905.39
  5. Step 5: Solve for x
    x = 609,418,905.39/30,131.88
  6. Step 6: Final answer
    x = 20,225.05

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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.