Home / 13,698.12-18,903.42-8,664.52

Finding the Fourth Proportional to 13,698.12, 18,903.42 and 8,664.52

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Solution

The fourth proportional to 13,698.12, 18,903.42 and 8,664.52 is: 11,957.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.12 : 18,903.42 = 8,664.52 : x
  2. Step 2: Convert to fraction form
    13,698.12/18,903.42 = 8,664.52/x
  3. Step 3: Cross multiply
    13,698.12x = 18,903.42 × 8,664.52
  4. Step 4: Simplify right side
    13,698.12x = 163,789,060.66
  5. Step 5: Solve for x
    x = 163,789,060.66/13,698.12
  6. Step 6: Final answer
    x = 11,957.05

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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.