Home / 30,102.12-45,135.36-12,327.48

Finding the Fourth Proportional to 30,102.12, 45,135.36 and 12,327.48

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Solution

The fourth proportional to 30,102.12, 45,135.36 and 12,327.48 is: 18,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,102.12 : 45,135.36 = 12,327.48 : x
  2. Step 2: Convert to fraction form
    30,102.12/45,135.36 = 12,327.48/x
  3. Step 3: Cross multiply
    30,102.12x = 45,135.36 × 12,327.48
  4. Step 4: Simplify right side
    30,102.12x = 556,405,247.69
  5. Step 5: Solve for x
    x = 556,405,247.69/30,102.12
  6. Step 6: Final answer
    x = 18,483.92

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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.