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Finding the Fourth Proportional to 39,240, 58,860 and 10,056

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Solution

The fourth proportional to 39,240, 58,860 and 10,056 is: 15,084

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240 : 58,860 = 10,056 : x
  2. Step 2: Convert to fraction form
    39,240/58,860 = 10,056/x
  3. Step 3: Cross multiply
    39,240x = 58,860 × 10,056
  4. Step 4: Simplify right side
    39,240x = 591,896,160
  5. Step 5: Solve for x
    x = 591,896,160/39,240
  6. Step 6: Final answer
    x = 15,084

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.