Home / 28,149.12-42,194.12-13,340.30

Finding the Fourth Proportional to 28,149.12, 42,194.12 and 13,340.30

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Solution

The fourth proportional to 28,149.12, 42,194.12 and 13,340.30 is: 19,996.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.12 : 42,194.12 = 13,340.30 : x
  2. Step 2: Convert to fraction form
    28,149.12/42,194.12 = 13,340.30/x
  3. Step 3: Cross multiply
    28,149.12x = 42,194.12 × 13,340.30
  4. Step 4: Simplify right side
    28,149.12x = 562,881,941.36
  5. Step 5: Solve for x
    x = 562,881,941.36/28,149.12
  6. Step 6: Final answer
    x = 19,996.43

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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.