Home / 19,981.70-29,969.18-7,328.84

Finding the Fourth Proportional to 19,981.70, 29,969.18 and 7,328.84

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Solution

The fourth proportional to 19,981.70, 29,969.18 and 7,328.84 is: 10,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.70 : 29,969.18 = 7,328.84 : x
  2. Step 2: Convert to fraction form
    19,981.70/29,969.18 = 7,328.84/x
  3. Step 3: Cross multiply
    19,981.70x = 29,969.18 × 7,328.84
  4. Step 4: Simplify right side
    19,981.70x = 219,639,325.15
  5. Step 5: Solve for x
    x = 219,639,325.15/19,981.70
  6. Step 6: Final answer
    x = 10,992.02

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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.