Home / 22,979.73-31,710.81-12,908.60

Finding the Fourth Proportional to 22,979.73, 31,710.81 and 12,908.60

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Solution

The fourth proportional to 22,979.73, 31,710.81 and 12,908.60 is: 17,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,979.73 : 31,710.81 = 12,908.60 : x
  2. Step 2: Convert to fraction form
    22,979.73/31,710.81 = 12,908.60/x
  3. Step 3: Cross multiply
    22,979.73x = 31,710.81 × 12,908.60
  4. Step 4: Simplify right side
    22,979.73x = 409,341,938.87
  5. Step 5: Solve for x
    x = 409,341,938.87/22,979.73
  6. Step 6: Final answer
    x = 17,813.17

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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.