Home / 30,985.12-42,759.53-16,837.93

Finding the Fourth Proportional to 30,985.12, 42,759.53 and 16,837.93

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Solution

The fourth proportional to 30,985.12, 42,759.53 and 16,837.93 is: 23,236.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.12 : 42,759.53 = 16,837.93 : x
  2. Step 2: Convert to fraction form
    30,985.12/42,759.53 = 16,837.93/x
  3. Step 3: Cross multiply
    30,985.12x = 42,759.53 × 16,837.93
  4. Step 4: Simplify right side
    30,985.12x = 719,981,972.97
  5. Step 5: Solve for x
    x = 719,981,972.97/30,985.12
  6. Step 6: Final answer
    x = 23,236.38

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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.