Home / 12,724.50-17,559.81-7,135.50

Finding the Fourth Proportional to 12,724.50, 17,559.81 and 7,135.50

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Solution

The fourth proportional to 12,724.50, 17,559.81 and 7,135.50 is: 9,846.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,724.50 : 17,559.81 = 7,135.50 : x
  2. Step 2: Convert to fraction form
    12,724.50/17,559.81 = 7,135.50/x
  3. Step 3: Cross multiply
    12,724.50x = 17,559.81 × 7,135.50
  4. Step 4: Simplify right side
    12,724.50x = 125,298,024.26
  5. Step 5: Solve for x
    x = 125,298,024.26/12,724.50
  6. Step 6: Final answer
    x = 9,846.99

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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.