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Finding the Fourth Proportional to 21,690.94, 32,474.90 and 14,203.24

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Solution

The fourth proportional to 21,690.94, 32,474.90 and 14,203.24 is: 21,264.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.94 : 32,474.90 = 14,203.24 : x
  2. Step 2: Convert to fraction form
    21,690.94/32,474.90 = 14,203.24/x
  3. Step 3: Cross multiply
    21,690.94x = 32,474.90 × 14,203.24
  4. Step 4: Simplify right side
    21,690.94x = 461,248,798.68
  5. Step 5: Solve for x
    x = 461,248,798.68/21,690.94
  6. Step 6: Final answer
    x = 21,264.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.