Home / 13,722.02-18,936.12-7,672.23

Finding the Fourth Proportional to 13,722.02, 18,936.12 and 7,672.23

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Solution

The fourth proportional to 13,722.02, 18,936.12 and 7,672.23 is: 10,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.02 : 18,936.12 = 7,672.23 : x
  2. Step 2: Convert to fraction form
    13,722.02/18,936.12 = 7,672.23/x
  3. Step 3: Cross multiply
    13,722.02x = 18,936.12 × 7,672.23
  4. Step 4: Simplify right side
    13,722.02x = 145,282,267.95
  5. Step 5: Solve for x
    x = 145,282,267.95/13,722.02
  6. Step 6: Final answer
    x = 10,587.53

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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.