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Finding the Fourth Proportional to 22,495.80, 31,050.21 and 12,936.74

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Solution

The fourth proportional to 22,495.80, 31,050.21 and 12,936.74 is: 17,856.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,495.80 : 31,050.21 = 12,936.74 : x
  2. Step 2: Convert to fraction form
    22,495.80/31,050.21 = 12,936.74/x
  3. Step 3: Cross multiply
    22,495.80x = 31,050.21 × 12,936.74
  4. Step 4: Simplify right side
    22,495.80x = 401,688,386.98
  5. Step 5: Solve for x
    x = 401,688,386.98/22,495.80
  6. Step 6: Final answer
    x = 17,856.15

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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.