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Finding the Fourth Proportional to 39,353.51, 54,308.43 and 21,448.46

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Solution

The fourth proportional to 39,353.51, 54,308.43 and 21,448.46 is: 29,599.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,353.51 : 54,308.43 = 21,448.46 : x
  2. Step 2: Convert to fraction form
    39,353.51/54,308.43 = 21,448.46/x
  3. Step 3: Cross multiply
    39,353.51x = 54,308.43 × 21,448.46
  4. Step 4: Simplify right side
    39,353.51x = 1,164,831,916.98
  5. Step 5: Solve for x
    x = 1,164,831,916.98/39,353.51
  6. Step 6: Final answer
    x = 29,599.19

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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.