Home / 12,979.02-17,917.93-10,398.70

Finding the Fourth Proportional to 12,979.02, 17,917.93 and 10,398.70

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Solution

The fourth proportional to 12,979.02, 17,917.93 and 10,398.70 is: 14,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.02 : 17,917.93 = 10,398.70 : x
  2. Step 2: Convert to fraction form
    12,979.02/17,917.93 = 10,398.70/x
  3. Step 3: Cross multiply
    12,979.02x = 17,917.93 × 10,398.70
  4. Step 4: Simplify right side
    12,979.02x = 186,323,293.73
  5. Step 5: Solve for x
    x = 186,323,293.73/12,979.02
  6. Step 6: Final answer
    x = 14,355.73

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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.