Home / 30,984.86-42,759.36-16,837.70

Finding the Fourth Proportional to 30,984.86, 42,759.36 and 16,837.70

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Solution

The fourth proportional to 30,984.86, 42,759.36 and 16,837.70 is: 23,236.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,984.86 : 42,759.36 = 16,837.70 : x
  2. Step 2: Convert to fraction form
    30,984.86/42,759.36 = 16,837.70/x
  3. Step 3: Cross multiply
    30,984.86x = 42,759.36 × 16,837.70
  4. Step 4: Simplify right side
    30,984.86x = 719,969,275.87
  5. Step 5: Solve for x
    x = 719,969,275.87/30,984.86
  6. Step 6: Final answer
    x = 23,236.16

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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.