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Finding the Fourth Proportional to 13,698.42, 18,904.10 and 8,037.51

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Solution

The fourth proportional to 13,698.42, 18,904.10 and 8,037.51 is: 11,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.42 : 18,904.10 = 8,037.51 : x
  2. Step 2: Convert to fraction form
    13,698.42/18,904.10 = 8,037.51/x
  3. Step 3: Cross multiply
    13,698.42x = 18,904.10 × 8,037.51
  4. Step 4: Simplify right side
    13,698.42x = 151,941,852.60
  5. Step 5: Solve for x
    x = 151,941,852.60/13,698.42
  6. Step 6: Final answer
    x = 11,091.93

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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.