Home / 21,472.09-29,642.64-16,681.35

Finding the Fourth Proportional to 21,472.09, 29,642.64 and 16,681.35

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Solution

The fourth proportional to 21,472.09, 29,642.64 and 16,681.35 is: 23,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.09 : 29,642.64 = 16,681.35 : x
  2. Step 2: Convert to fraction form
    21,472.09/29,642.64 = 16,681.35/x
  3. Step 3: Cross multiply
    21,472.09x = 29,642.64 × 16,681.35
  4. Step 4: Simplify right side
    21,472.09x = 494,479,252.76
  5. Step 5: Solve for x
    x = 494,479,252.76/21,472.09
  6. Step 6: Final answer
    x = 23,028.93

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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.