Home / 22,541.66-31,109.81-12,981.86

Finding the Fourth Proportional to 22,541.66, 31,109.81 and 12,981.86

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Solution

The fourth proportional to 22,541.66, 31,109.81 and 12,981.86 is: 17,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,541.66 : 31,109.81 = 12,981.86 : x
  2. Step 2: Convert to fraction form
    22,541.66/31,109.81 = 12,981.86/x
  3. Step 3: Cross multiply
    22,541.66x = 31,109.81 × 12,981.86
  4. Step 4: Simplify right side
    22,541.66x = 403,863,198.05
  5. Step 5: Solve for x
    x = 403,863,198.05/22,541.66
  6. Step 6: Final answer
    x = 17,916.30

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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.