Home / 19,199.81-28,788.87-7,948.79

Finding the Fourth Proportional to 19,199.81, 28,788.87 and 7,948.79

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Solution

The fourth proportional to 19,199.81, 28,788.87 and 7,948.79 is: 11,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,199.81 : 28,788.87 = 7,948.79 : x
  2. Step 2: Convert to fraction form
    19,199.81/28,788.87 = 7,948.79/x
  3. Step 3: Cross multiply
    19,199.81x = 28,788.87 × 7,948.79
  4. Step 4: Simplify right side
    19,199.81x = 228,836,681.97
  5. Step 5: Solve for x
    x = 228,836,681.97/19,199.81
  6. Step 6: Final answer
    x = 11,918.70

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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.