Home / 30,116.79-45,175.47-12,342.88

Finding the Fourth Proportional to 30,116.79, 45,175.47 and 12,342.88

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Solution

The fourth proportional to 30,116.79, 45,175.47 and 12,342.88 is: 18,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,116.79 : 45,175.47 = 12,342.88 : x
  2. Step 2: Convert to fraction form
    30,116.79/45,175.47 = 12,342.88/x
  3. Step 3: Cross multiply
    30,116.79x = 45,175.47 × 12,342.88
  4. Step 4: Simplify right side
    30,116.79x = 557,595,405.15
  5. Step 5: Solve for x
    x = 557,595,405.15/30,116.79
  6. Step 6: Final answer
    x = 18,514.44

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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.