Home / 12,641.40-18,952.20-7,710.12

Finding the Fourth Proportional to 12,641.40, 18,952.20 and 7,710.12

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Solution

The fourth proportional to 12,641.40, 18,952.20 and 7,710.12 is: 11,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.40 : 18,952.20 = 7,710.12 : x
  2. Step 2: Convert to fraction form
    12,641.40/18,952.20 = 7,710.12/x
  3. Step 3: Cross multiply
    12,641.40x = 18,952.20 × 7,710.12
  4. Step 4: Simplify right side
    12,641.40x = 146,123,736.26
  5. Step 5: Solve for x
    x = 146,123,736.26/12,641.40
  6. Step 6: Final answer
    x = 11,559.14

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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.