Home / 21,475.08-29,629.54-13,921.72

Finding the Fourth Proportional to 21,475.08, 29,629.54 and 13,921.72

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Solution

The fourth proportional to 21,475.08, 29,629.54 and 13,921.72 is: 19,208.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.08 : 29,629.54 = 13,921.72 : x
  2. Step 2: Convert to fraction form
    21,475.08/29,629.54 = 13,921.72/x
  3. Step 3: Cross multiply
    21,475.08x = 29,629.54 × 13,921.72
  4. Step 4: Simplify right side
    21,475.08x = 412,494,159.61
  5. Step 5: Solve for x
    x = 412,494,159.61/21,475.08
  6. Step 6: Final answer
    x = 19,208.04

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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.