Home / 12,460.40-18,690.52-6,619.76

Finding the Fourth Proportional to 12,460.40, 18,690.52 and 6,619.76

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Solution

The fourth proportional to 12,460.40, 18,690.52 and 6,619.76 is: 9,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,460.40 : 18,690.52 = 6,619.76 : x
  2. Step 2: Convert to fraction form
    12,460.40/18,690.52 = 6,619.76/x
  3. Step 3: Cross multiply
    12,460.40x = 18,690.52 × 6,619.76
  4. Step 4: Simplify right side
    12,460.40x = 123,726,756.68
  5. Step 5: Solve for x
    x = 123,726,756.68/12,460.40
  6. Step 6: Final answer
    x = 9,929.60

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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.