Home / 39,477.10-54,477.74-21,571.69

Finding the Fourth Proportional to 39,477.10, 54,477.74 and 21,571.69

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Solution

The fourth proportional to 39,477.10, 54,477.74 and 21,571.69 is: 29,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,477.10 : 54,477.74 = 21,571.69 : x
  2. Step 2: Convert to fraction form
    39,477.10/54,477.74 = 21,571.69/x
  3. Step 3: Cross multiply
    39,477.10x = 54,477.74 × 21,571.69
  4. Step 4: Simplify right side
    39,477.10x = 1,175,176,919.18
  5. Step 5: Solve for x
    x = 1,175,176,919.18/39,477.10
  6. Step 6: Final answer
    x = 29,768.57

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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.