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Finding the Fourth Proportional to 20,068.74, 27,698.10 and 13,015.68

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Solution

The fourth proportional to 20,068.74, 27,698.10 and 13,015.68 is: 17,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,068.74 : 27,698.10 = 13,015.68 : x
  2. Step 2: Convert to fraction form
    20,068.74/27,698.10 = 13,015.68/x
  3. Step 3: Cross multiply
    20,068.74x = 27,698.10 × 13,015.68
  4. Step 4: Simplify right side
    20,068.74x = 360,509,606.21
  5. Step 5: Solve for x
    x = 360,509,606.21/20,068.74
  6. Step 6: Final answer
    x = 17,963.74

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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.