Home / 13,981.50-19,289.34-8,009.10

Finding the Fourth Proportional to 13,981.50, 19,289.34 and 8,009.10

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Solution

The fourth proportional to 13,981.50, 19,289.34 and 8,009.10 is: 11,049.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.50 : 19,289.34 = 8,009.10 : x
  2. Step 2: Convert to fraction form
    13,981.50/19,289.34 = 8,009.10/x
  3. Step 3: Cross multiply
    13,981.50x = 19,289.34 × 8,009.10
  4. Step 4: Simplify right side
    13,981.50x = 154,490,252.99
  5. Step 5: Solve for x
    x = 154,490,252.99/13,981.50
  6. Step 6: Final answer
    x = 11,049.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.