Home / 21,477.52-29,631.32-13,520.24

Finding the Fourth Proportional to 21,477.52, 29,631.32 and 13,520.24

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Solution

The fourth proportional to 21,477.52, 29,631.32 and 13,520.24 is: 18,653.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.52 : 29,631.32 = 13,520.24 : x
  2. Step 2: Convert to fraction form
    21,477.52/29,631.32 = 13,520.24/x
  3. Step 3: Cross multiply
    21,477.52x = 29,631.32 × 13,520.24
  4. Step 4: Simplify right side
    21,477.52x = 400,622,557.92
  5. Step 5: Solve for x
    x = 400,622,557.92/21,477.52
  6. Step 6: Final answer
    x = 18,653.11

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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.