Home / 30,985.55-42,759.98-16,838.39

Finding the Fourth Proportional to 30,985.55, 42,759.98 and 16,838.39

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Solution

The fourth proportional to 30,985.55, 42,759.98 and 16,838.39 is: 23,236.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.55 : 42,759.98 = 16,838.39 : x
  2. Step 2: Convert to fraction form
    30,985.55/42,759.98 = 16,838.39/x
  3. Step 3: Cross multiply
    30,985.55x = 42,759.98 × 16,838.39
  4. Step 4: Simplify right side
    30,985.55x = 720,009,305.48
  5. Step 5: Solve for x
    x = 720,009,305.48/30,985.55
  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.