Home / 28,111.30-42,160.20-16,239.40

Finding the Fourth Proportional to 28,111.30, 42,160.20 and 16,239.40

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Solution

The fourth proportional to 28,111.30, 42,160.20 and 16,239.40 is: 24,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.30 : 42,160.20 = 16,239.40 : x
  2. Step 2: Convert to fraction form
    28,111.30/42,160.20 = 16,239.40/x
  3. Step 3: Cross multiply
    28,111.30x = 42,160.20 × 16,239.40
  4. Step 4: Simplify right side
    28,111.30x = 684,656,351.88
  5. Step 5: Solve for x
    x = 684,656,351.88/28,111.30
  6. Step 6: Final answer
    x = 24,355.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.