Home / 13,909.29-19,195.20-7,621.71

Finding the Fourth Proportional to 13,909.29, 19,195.20 and 7,621.71

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Solution

The fourth proportional to 13,909.29, 19,195.20 and 7,621.71 is: 10,518.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.29 : 19,195.20 = 7,621.71 : x
  2. Step 2: Convert to fraction form
    13,909.29/19,195.20 = 7,621.71/x
  3. Step 3: Cross multiply
    13,909.29x = 19,195.20 × 7,621.71
  4. Step 4: Simplify right side
    13,909.29x = 146,300,247.79
  5. Step 5: Solve for x
    x = 146,300,247.79/13,909.29
  6. Step 6: Final answer
    x = 10,518.17

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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.