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Finding the Fourth Proportional to 21,953.25, 30,242.02 and 16,642.89

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Solution

The fourth proportional to 21,953.25, 30,242.02 and 16,642.89 is: 22,926.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,953.25 : 30,242.02 = 16,642.89 : x
  2. Step 2: Convert to fraction form
    21,953.25/30,242.02 = 16,642.89/x
  3. Step 3: Cross multiply
    21,953.25x = 30,242.02 × 16,642.89
  4. Step 4: Simplify right side
    21,953.25x = 503,314,612.24
  5. Step 5: Solve for x
    x = 503,314,612.24/21,953.25
  6. Step 6: Final answer
    x = 22,926.66

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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.