Home / 30,661.74-42,329.99-18,564.39

Finding the Fourth Proportional to 30,661.74, 42,329.99 and 18,564.39

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Solution

The fourth proportional to 30,661.74, 42,329.99 and 18,564.39 is: 25,629.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.74 : 42,329.99 = 18,564.39 : x
  2. Step 2: Convert to fraction form
    30,661.74/42,329.99 = 18,564.39/x
  3. Step 3: Cross multiply
    30,661.74x = 42,329.99 × 18,564.39
  4. Step 4: Simplify right side
    30,661.74x = 785,830,489.47
  5. Step 5: Solve for x
    x = 785,830,489.47/30,661.74
  6. Step 6: Final answer
    x = 25,629.02

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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.