Home / 30,293.60-45,440.40-19,212.80

Finding the Fourth Proportional to 30,293.60, 45,440.40 and 19,212.80

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Solution

The fourth proportional to 30,293.60, 45,440.40 and 19,212.80 is: 28,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,293.60 : 45,440.40 = 19,212.80 : x
  2. Step 2: Convert to fraction form
    30,293.60/45,440.40 = 19,212.80/x
  3. Step 3: Cross multiply
    30,293.60x = 45,440.40 × 19,212.80
  4. Step 4: Simplify right side
    30,293.60x = 873,037,317.12
  5. Step 5: Solve for x
    x = 873,037,317.12/30,293.60
  6. Step 6: Final answer
    x = 28,819.20

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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.