Home / 30,985.61-42,759.94-16,838.45

Finding the Fourth Proportional to 30,985.61, 42,759.94 and 16,838.45

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Solution

The fourth proportional to 30,985.61, 42,759.94 and 16,838.45 is: 23,236.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.61 : 42,759.94 = 16,838.45 : x
  2. Step 2: Convert to fraction form
    30,985.61/42,759.94 = 16,838.45/x
  3. Step 3: Cross multiply
    30,985.61x = 42,759.94 × 16,838.45
  4. Step 4: Simplify right side
    30,985.61x = 720,011,288.24
  5. Step 5: Solve for x
    x = 720,011,288.24/30,985.61
  6. Step 6: Final answer
    x = 23,236.96

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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.