Home / 30,099.88-45,142.56-12,560.20

Finding the Fourth Proportional to 30,099.88, 45,142.56 and 12,560.20

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Solution

The fourth proportional to 30,099.88, 45,142.56 and 12,560.20 is: 18,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,099.88 : 45,142.56 = 12,560.20 : x
  2. Step 2: Convert to fraction form
    30,099.88/45,142.56 = 12,560.20/x
  3. Step 3: Cross multiply
    30,099.88x = 45,142.56 × 12,560.20
  4. Step 4: Simplify right side
    30,099.88x = 566,999,582.11
  5. Step 5: Solve for x
    x = 566,999,582.11/30,099.88
  6. Step 6: Final answer
    x = 18,837.27

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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.