Home / 30,099.12-45,130.86-12,324.48

Finding the Fourth Proportional to 30,099.12, 45,130.86 and 12,324.48

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Solution

The fourth proportional to 30,099.12, 45,130.86 and 12,324.48 is: 18,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,099.12 : 45,130.86 = 12,324.48 : x
  2. Step 2: Convert to fraction form
    30,099.12/45,130.86 = 12,324.48/x
  3. Step 3: Cross multiply
    30,099.12x = 45,130.86 × 12,324.48
  4. Step 4: Simplify right side
    30,099.12x = 556,214,381.45
  5. Step 5: Solve for x
    x = 556,214,381.45/30,099.12
  6. Step 6: Final answer
    x = 18,479.42

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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.