Home / 21,450.09-29,602.50-12,020.07

Finding the Fourth Proportional to 21,450.09, 29,602.50 and 12,020.07

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Solution

The fourth proportional to 21,450.09, 29,602.50 and 12,020.07 is: 16,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.09 : 29,602.50 = 12,020.07 : x
  2. Step 2: Convert to fraction form
    21,450.09/29,602.50 = 12,020.07/x
  3. Step 3: Cross multiply
    21,450.09x = 29,602.50 × 12,020.07
  4. Step 4: Simplify right side
    21,450.09x = 355,824,122.18
  5. Step 5: Solve for x
    x = 355,824,122.18/21,450.09
  6. Step 6: Final answer
    x = 16,588.47

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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.