Home / 19,099.40-28,639.80-6,620.13

Finding the Fourth Proportional to 19,099.40, 28,639.80 and 6,620.13

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Solution

The fourth proportional to 19,099.40, 28,639.80 and 6,620.13 is: 9,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,099.40 : 28,639.80 = 6,620.13 : x
  2. Step 2: Convert to fraction form
    19,099.40/28,639.80 = 6,620.13/x
  3. Step 3: Cross multiply
    19,099.40x = 28,639.80 × 6,620.13
  4. Step 4: Simplify right side
    19,099.40x = 189,599,199.17
  5. Step 5: Solve for x
    x = 189,599,199.17/19,099.40
  6. Step 6: Final answer
    x = 9,926.97

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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.