Home / 39,178.86-54,066.28-21,274.56

Finding the Fourth Proportional to 39,178.86, 54,066.28 and 21,274.56

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Solution

The fourth proportional to 39,178.86, 54,066.28 and 21,274.56 is: 29,358.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,178.86 : 54,066.28 = 21,274.56 : x
  2. Step 2: Convert to fraction form
    39,178.86/54,066.28 = 21,274.56/x
  3. Step 3: Cross multiply
    39,178.86x = 54,066.28 × 21,274.56
  4. Step 4: Simplify right side
    39,178.86x = 1,150,236,317.84
  5. Step 5: Solve for x
    x = 1,150,236,317.84/39,178.86
  6. Step 6: Final answer
    x = 29,358.60

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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.