Home / 13,909.08-19,194.47-7,621.46

Finding the Fourth Proportional to 13,909.08, 19,194.47 and 7,621.46

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Solution

The fourth proportional to 13,909.08, 19,194.47 and 7,621.46 is: 10,517.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.08 : 19,194.47 = 7,621.46 : x
  2. Step 2: Convert to fraction form
    13,909.08/19,194.47 = 7,621.46/x
  3. Step 3: Cross multiply
    13,909.08x = 19,194.47 × 7,621.46
  4. Step 4: Simplify right side
    13,909.08x = 146,289,851.81
  5. Step 5: Solve for x
    x = 146,289,851.81/13,909.08
  6. Step 6: Final answer
    x = 10,517.58

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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.