Home / 18,570.77-27,858.71-5,421.23

Finding the Fourth Proportional to 18,570.77, 27,858.71 and 5,421.23

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Solution

The fourth proportional to 18,570.77, 27,858.71 and 5,421.23 is: 8,132.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.77 : 27,858.71 = 5,421.23 : x
  2. Step 2: Convert to fraction form
    18,570.77/27,858.71 = 5,421.23/x
  3. Step 3: Cross multiply
    18,570.77x = 27,858.71 × 5,421.23
  4. Step 4: Simplify right side
    18,570.77x = 151,028,474.41
  5. Step 5: Solve for x
    x = 151,028,474.41/18,570.77
  6. Step 6: Final answer
    x = 8,132.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.