Home / 15,420.40-23,131.04-4,890.47

Finding the Fourth Proportional to 15,420.40, 23,131.04 and 4,890.47

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Solution

The fourth proportional to 15,420.40, 23,131.04 and 4,890.47 is: 7,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.40 : 23,131.04 = 4,890.47 : x
  2. Step 2: Convert to fraction form
    15,420.40/23,131.04 = 4,890.47/x
  3. Step 3: Cross multiply
    15,420.40x = 23,131.04 × 4,890.47
  4. Step 4: Simplify right side
    15,420.40x = 113,121,517.08
  5. Step 5: Solve for x
    x = 113,121,517.08/15,420.40
  6. Step 6: Final answer
    x = 7,335.84

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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.