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Finding the Fourth Proportional to 19,477.64, 26,873.70 and 13,113.20

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Solution

The fourth proportional to 19,477.64, 26,873.70 and 13,113.20 is: 18,092.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,477.64 : 26,873.70 = 13,113.20 : x
  2. Step 2: Convert to fraction form
    19,477.64/26,873.70 = 13,113.20/x
  3. Step 3: Cross multiply
    19,477.64x = 26,873.70 × 13,113.20
  4. Step 4: Simplify right side
    19,477.64x = 352,400,202.84
  5. Step 5: Solve for x
    x = 352,400,202.84/19,477.64
  6. Step 6: Final answer
    x = 18,092.55

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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.