Home / 30,985.65-42,759.27-16,838.52

Finding the Fourth Proportional to 30,985.65, 42,759.27 and 16,838.52

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Solution

The fourth proportional to 30,985.65, 42,759.27 and 16,838.52 is: 23,236.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.65 : 42,759.27 = 16,838.52 : x
  2. Step 2: Convert to fraction form
    30,985.65/42,759.27 = 16,838.52/x
  3. Step 3: Cross multiply
    30,985.65x = 42,759.27 × 16,838.52
  4. Step 4: Simplify right side
    30,985.65x = 720,002,823.08
  5. Step 5: Solve for x
    x = 720,002,823.08/30,985.65
  6. Step 6: Final answer
    x = 23,236.65

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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.