Home / 30,680.04-42,352.72-23,129.44

Finding the Fourth Proportional to 30,680.04, 42,352.72 and 23,129.44

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Solution

The fourth proportional to 30,680.04, 42,352.72 and 23,129.44 is: 31,929.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680.04 : 42,352.72 = 23,129.44 : x
  2. Step 2: Convert to fraction form
    30,680.04/42,352.72 = 23,129.44/x
  3. Step 3: Cross multiply
    30,680.04x = 42,352.72 × 23,129.44
  4. Step 4: Simplify right side
    30,680.04x = 979,594,696.08
  5. Step 5: Solve for x
    x = 979,594,696.08/30,680.04
  6. Step 6: Final answer
    x = 31,929.38

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Half scale
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Double scale
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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.