Home / 21,529.75-29,710.23-11,970.22

Finding the Fourth Proportional to 21,529.75, 29,710.23 and 11,970.22

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Solution

The fourth proportional to 21,529.75, 29,710.23 and 11,970.22 is: 16,518.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.75 : 29,710.23 = 11,970.22 : x
  2. Step 2: Convert to fraction form
    21,529.75/29,710.23 = 11,970.22/x
  3. Step 3: Cross multiply
    21,529.75x = 29,710.23 × 11,970.22
  4. Step 4: Simplify right side
    21,529.75x = 355,637,989.35
  5. Step 5: Solve for x
    x = 355,637,989.35/21,529.75
  6. Step 6: Final answer
    x = 16,518.44

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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.