Home / 21,521.27-29,698.57-12,089.63

Finding the Fourth Proportional to 21,521.27, 29,698.57 and 12,089.63

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Solution

The fourth proportional to 21,521.27, 29,698.57 and 12,089.63 is: 16,683.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,521.27 : 29,698.57 = 12,089.63 : x
  2. Step 2: Convert to fraction form
    21,521.27/29,698.57 = 12,089.63/x
  3. Step 3: Cross multiply
    21,521.27x = 29,698.57 × 12,089.63
  4. Step 4: Simplify right side
    21,521.27x = 359,044,722.83
  5. Step 5: Solve for x
    x = 359,044,722.83/21,521.27
  6. Step 6: Final answer
    x = 16,683.25

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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.