Home / 30,696.90-42,336.45-18,109.50

Finding the Fourth Proportional to 30,696.90, 42,336.45 and 18,109.50

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Solution

The fourth proportional to 30,696.90, 42,336.45 and 18,109.50 is: 24,976.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696.90 : 42,336.45 = 18,109.50 : x
  2. Step 2: Convert to fraction form
    30,696.90/42,336.45 = 18,109.50/x
  3. Step 3: Cross multiply
    30,696.90x = 42,336.45 × 18,109.50
  4. Step 4: Simplify right side
    30,696.90x = 766,691,941.28
  5. Step 5: Solve for x
    x = 766,691,941.28/30,696.90
  6. Step 6: Final answer
    x = 24,976.20

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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.