Home / 39,880.67-55,035.99-21,975.53

Finding the Fourth Proportional to 39,880.67, 55,035.99 and 21,975.53

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Solution

The fourth proportional to 39,880.67, 55,035.99 and 21,975.53 is: 30,326.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,880.67 : 55,035.99 = 21,975.53 : x
  2. Step 2: Convert to fraction form
    39,880.67/55,035.99 = 21,975.53/x
  3. Step 3: Cross multiply
    39,880.67x = 55,035.99 × 21,975.53
  4. Step 4: Simplify right side
    39,880.67x = 1,209,444,774.14
  5. Step 5: Solve for x
    x = 1,209,444,774.14/39,880.67
  6. Step 6: Final answer
    x = 30,326.59

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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.