Home / 15,420.82-23,100.39-7,089.42

Finding the Fourth Proportional to 15,420.82, 23,100.39 and 7,089.42

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Solution

The fourth proportional to 15,420.82, 23,100.39 and 7,089.42 is: 10,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.82 : 23,100.39 = 7,089.42 : x
  2. Step 2: Convert to fraction form
    15,420.82/23,100.39 = 7,089.42/x
  3. Step 3: Cross multiply
    15,420.82x = 23,100.39 × 7,089.42
  4. Step 4: Simplify right side
    15,420.82x = 163,768,366.87
  5. Step 5: Solve for x
    x = 163,768,366.87/15,420.82
  6. Step 6: Final answer
    x = 10,619.95

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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.