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Finding the Fourth Proportional to 39,365.68, 54,323.55 and 21,460.68

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Solution

The fourth proportional to 39,365.68, 54,323.55 and 21,460.68 is: 29,615.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,365.68 : 54,323.55 = 21,460.68 : x
  2. Step 2: Convert to fraction form
    39,365.68/54,323.55 = 21,460.68/x
  3. Step 3: Cross multiply
    39,365.68x = 54,323.55 × 21,460.68
  4. Step 4: Simplify right side
    39,365.68x = 1,165,820,063.66
  5. Step 5: Solve for x
    x = 1,165,820,063.66/39,365.68
  6. Step 6: Final answer
    x = 29,615.14

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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.