Home / 39,718.25-54,811.64-21,812.93

Finding the Fourth Proportional to 39,718.25, 54,811.64 and 21,812.93

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Solution

The fourth proportional to 39,718.25, 54,811.64 and 21,812.93 is: 30,102.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.25 : 54,811.64 = 21,812.93 : x
  2. Step 2: Convert to fraction form
    39,718.25/54,811.64 = 21,812.93/x
  3. Step 3: Cross multiply
    39,718.25x = 54,811.64 × 21,812.93
  4. Step 4: Simplify right side
    39,718.25x = 1,195,602,466.51
  5. Step 5: Solve for x
    x = 1,195,602,466.51/39,718.25
  6. Step 6: Final answer
    x = 30,102.09

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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.