Home / 39,069.84-53,916.36-21,165

Finding the Fourth Proportional to 39,069.84, 53,916.36 and 21,165

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Solution

The fourth proportional to 39,069.84, 53,916.36 and 21,165 is: 29,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,069.84 : 53,916.36 = 21,165 : x
  2. Step 2: Convert to fraction form
    39,069.84/53,916.36 = 21,165/x
  3. Step 3: Cross multiply
    39,069.84x = 53,916.36 × 21,165
  4. Step 4: Simplify right side
    39,069.84x = 1,141,139,759.40
  5. Step 5: Solve for x
    x = 1,141,139,759.40/39,069.84
  6. Step 6: Final answer
    x = 29,207.69

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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.