Home / 30,131.63-45,179.21-13,488.56

Finding the Fourth Proportional to 30,131.63, 45,179.21 and 13,488.56

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Solution

The fourth proportional to 30,131.63, 45,179.21 and 13,488.56 is: 20,224.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.63 : 45,179.21 = 13,488.56 : x
  2. Step 2: Convert to fraction form
    30,131.63/45,179.21 = 13,488.56/x
  3. Step 3: Cross multiply
    30,131.63x = 45,179.21 × 13,488.56
  4. Step 4: Simplify right side
    30,131.63x = 609,402,631.51
  5. Step 5: Solve for x
    x = 609,402,631.51/30,131.63
  6. Step 6: Final answer
    x = 20,224.68

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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.