Home / 45,212.40-67,828.32-18,903.60

Finding the Fourth Proportional to 45,212.40, 67,828.32 and 18,903.60

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Solution

The fourth proportional to 45,212.40, 67,828.32 and 18,903.60 is: 28,359.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,212.40 : 67,828.32 = 18,903.60 : x
  2. Step 2: Convert to fraction form
    45,212.40/67,828.32 = 18,903.60/x
  3. Step 3: Cross multiply
    45,212.40x = 67,828.32 × 18,903.60
  4. Step 4: Simplify right side
    45,212.40x = 1,282,199,429.95
  5. Step 5: Solve for x
    x = 1,282,199,429.95/45,212.40
  6. Step 6: Final answer
    x = 28,359.46

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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.