Home / 13,909.50-19,195.38-7,622.28

Finding the Fourth Proportional to 13,909.50, 19,195.38 and 7,622.28

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Solution

The fourth proportional to 13,909.50, 19,195.38 and 7,622.28 is: 10,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.50 : 19,195.38 = 7,622.28 : x
  2. Step 2: Convert to fraction form
    13,909.50/19,195.38 = 7,622.28/x
  3. Step 3: Cross multiply
    13,909.50x = 19,195.38 × 7,622.28
  4. Step 4: Simplify right side
    13,909.50x = 146,312,561.07
  5. Step 5: Solve for x
    x = 146,312,561.07/13,909.50
  6. Step 6: Final answer
    x = 10,518.89

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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.