Home / 30,985.42-42,760.14-16,838.26

Finding the Fourth Proportional to 30,985.42, 42,760.14 and 16,838.26

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Solution

The fourth proportional to 30,985.42, 42,760.14 and 16,838.26 is: 23,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.42 : 42,760.14 = 16,838.26 : x
  2. Step 2: Convert to fraction form
    30,985.42/42,760.14 = 16,838.26/x
  3. Step 3: Cross multiply
    30,985.42x = 42,760.14 × 16,838.26
  4. Step 4: Simplify right side
    30,985.42x = 720,006,354.96
  5. Step 5: Solve for x
    x = 720,006,354.96/30,985.42
  6. Step 6: Final answer
    x = 23,236.94

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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.