Home / 27,858.83-38,421.80-18,291.39

Finding the Fourth Proportional to 27,858.83, 38,421.80 and 18,291.39

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Solution

The fourth proportional to 27,858.83, 38,421.80 and 18,291.39 is: 25,226.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,858.83 : 38,421.80 = 18,291.39 : x
  2. Step 2: Convert to fraction form
    27,858.83/38,421.80 = 18,291.39/x
  3. Step 3: Cross multiply
    27,858.83x = 38,421.80 × 18,291.39
  4. Step 4: Simplify right side
    27,858.83x = 702,788,055.26
  5. Step 5: Solve for x
    x = 702,788,055.26/27,858.83
  6. Step 6: Final answer
    x = 25,226.76

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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.