Home / 23,121.81-31,876.32-14,619.69

Finding the Fourth Proportional to 23,121.81, 31,876.32 and 14,619.69

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Solution

The fourth proportional to 23,121.81, 31,876.32 and 14,619.69 is: 20,155.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.81 : 31,876.32 = 14,619.69 : x
  2. Step 2: Convert to fraction form
    23,121.81/31,876.32 = 14,619.69/x
  3. Step 3: Cross multiply
    23,121.81x = 31,876.32 × 14,619.69
  4. Step 4: Simplify right side
    23,121.81x = 466,021,916.74
  5. Step 5: Solve for x
    x = 466,021,916.74/23,121.81
  6. Step 6: Final answer
    x = 20,155.08

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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.