Home / 13,909.40-19,195-7,621.76

Finding the Fourth Proportional to 13,909.40, 19,195 and 7,621.76

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Solution

The fourth proportional to 13,909.40, 19,195 and 7,621.76 is: 10,518.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.40 : 19,195 = 7,621.76 : x
  2. Step 2: Convert to fraction form
    13,909.40/19,195 = 7,621.76/x
  3. Step 3: Cross multiply
    13,909.40x = 19,195 × 7,621.76
  4. Step 4: Simplify right side
    13,909.40x = 146,299,683.20
  5. Step 5: Solve for x
    x = 146,299,683.20/13,909.40
  6. Step 6: Final answer
    x = 10,518.04

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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.