Home / 19,340.05-28,988.83-9,980.73

Finding the Fourth Proportional to 19,340.05, 28,988.83 and 9,980.73

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Solution

The fourth proportional to 19,340.05, 28,988.83 and 9,980.73 is: 14,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,340.05 : 28,988.83 = 9,980.73 : x
  2. Step 2: Convert to fraction form
    19,340.05/28,988.83 = 9,980.73/x
  3. Step 3: Cross multiply
    19,340.05x = 28,988.83 × 9,980.73
  4. Step 4: Simplify right side
    19,340.05x = 289,329,515.35
  5. Step 5: Solve for x
    x = 289,329,515.35/19,340.05
  6. Step 6: Final answer
    x = 14,960.13

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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.