Home / 13,921.04-19,211.20-7,633.28

Finding the Fourth Proportional to 13,921.04, 19,211.20 and 7,633.28

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Solution

The fourth proportional to 13,921.04, 19,211.20 and 7,633.28 is: 10,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.04 : 19,211.20 = 7,633.28 : x
  2. Step 2: Convert to fraction form
    13,921.04/19,211.20 = 7,633.28/x
  3. Step 3: Cross multiply
    13,921.04x = 19,211.20 × 7,633.28
  4. Step 4: Simplify right side
    13,921.04x = 146,644,468.74
  5. Step 5: Solve for x
    x = 146,644,468.74/13,921.04
  6. Step 6: Final answer
    x = 10,534.02

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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.