Home / 30,541.60-42,147.88-18,605.44

Finding the Fourth Proportional to 30,541.60, 42,147.88 and 18,605.44

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Solution

The fourth proportional to 30,541.60, 42,147.88 and 18,605.44 is: 25,675.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,541.60 : 42,147.88 = 18,605.44 : x
  2. Step 2: Convert to fraction form
    30,541.60/42,147.88 = 18,605.44/x
  3. Step 3: Cross multiply
    30,541.60x = 42,147.88 × 18,605.44
  4. Step 4: Simplify right side
    30,541.60x = 784,179,852.47
  5. Step 5: Solve for x
    x = 784,179,852.47/30,541.60
  6. Step 6: Final answer
    x = 25,675.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.