Home / 22,497.40-31,047.78-12,940.30

Finding the Fourth Proportional to 22,497.40, 31,047.78 and 12,940.30

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Solution

The fourth proportional to 22,497.40, 31,047.78 and 12,940.30 is: 17,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,497.40 : 31,047.78 = 12,940.30 : x
  2. Step 2: Convert to fraction form
    22,497.40/31,047.78 = 12,940.30/x
  3. Step 3: Cross multiply
    22,497.40x = 31,047.78 × 12,940.30
  4. Step 4: Simplify right side
    22,497.40x = 401,767,587.53
  5. Step 5: Solve for x
    x = 401,767,587.53/22,497.40
  6. Step 6: Final answer
    x = 17,858.40

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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.