Home / 30,668.48-42,322.87-18,568.77

Finding the Fourth Proportional to 30,668.48, 42,322.87 and 18,568.77

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Solution

The fourth proportional to 30,668.48, 42,322.87 and 18,568.77 is: 25,625.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.48 : 42,322.87 = 18,568.77 : x
  2. Step 2: Convert to fraction form
    30,668.48/42,322.87 = 18,568.77/x
  3. Step 3: Cross multiply
    30,668.48x = 42,322.87 × 18,568.77
  4. Step 4: Simplify right side
    30,668.48x = 785,883,638.77
  5. Step 5: Solve for x
    x = 785,883,638.77/30,668.48
  6. Step 6: Final answer
    x = 25,625.13

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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.