Home / 30,114.72-45,161.20-10,387.36

Finding the Fourth Proportional to 30,114.72, 45,161.20 and 10,387.36

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Solution

The fourth proportional to 30,114.72, 45,161.20 and 10,387.36 is: 15,577.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,114.72 : 45,161.20 = 10,387.36 : x
  2. Step 2: Convert to fraction form
    30,114.72/45,161.20 = 10,387.36/x
  3. Step 3: Cross multiply
    30,114.72x = 45,161.20 × 10,387.36
  4. Step 4: Simplify right side
    30,114.72x = 469,105,642.43
  5. Step 5: Solve for x
    x = 469,105,642.43/30,114.72
  6. Step 6: Final answer
    x = 15,577.29

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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.