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Finding the Fourth Proportional to 16,390.19, 22,620.21 and 10,020.52

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Solution

The fourth proportional to 16,390.19, 22,620.21 and 10,020.52 is: 13,829.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.19 : 22,620.21 = 10,020.52 : x
  2. Step 2: Convert to fraction form
    16,390.19/22,620.21 = 10,020.52/x
  3. Step 3: Cross multiply
    16,390.19x = 22,620.21 × 10,020.52
  4. Step 4: Simplify right side
    16,390.19x = 226,666,186.53
  5. Step 5: Solve for x
    x = 226,666,186.53/16,390.19
  6. Step 6: Final answer
    x = 13,829.38

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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.