Home / 19,961.64-29,766.38-18,980.60

Finding the Fourth Proportional to 19,961.64, 29,766.38 and 18,980.60

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Solution

The fourth proportional to 19,961.64, 29,766.38 and 18,980.60 is: 28,303.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.64 : 29,766.38 = 18,980.60 : x
  2. Step 2: Convert to fraction form
    19,961.64/29,766.38 = 18,980.60/x
  3. Step 3: Cross multiply
    19,961.64x = 29,766.38 × 18,980.60
  4. Step 4: Simplify right side
    19,961.64x = 564,983,508.49
  5. Step 5: Solve for x
    x = 564,983,508.49/19,961.64
  6. Step 6: Final answer
    x = 28,303.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.