Home / 20,128.98-30,057.92-16,438.53

Finding the Fourth Proportional to 20,128.98, 30,057.92 and 16,438.53

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Solution

The fourth proportional to 20,128.98, 30,057.92 and 16,438.53 is: 24,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.98 : 30,057.92 = 16,438.53 : x
  2. Step 2: Convert to fraction form
    20,128.98/30,057.92 = 16,438.53/x
  3. Step 3: Cross multiply
    20,128.98x = 30,057.92 × 16,438.53
  4. Step 4: Simplify right side
    20,128.98x = 494,108,060.75
  5. Step 5: Solve for x
    x = 494,108,060.75/20,128.98
  6. Step 6: Final answer
    x = 24,547.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.