Home / 15,837.45-21,842.23-9,780.37

Finding the Fourth Proportional to 15,837.45, 21,842.23 and 9,780.37

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Solution

The fourth proportional to 15,837.45, 21,842.23 and 9,780.37 is: 13,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,837.45 : 21,842.23 = 9,780.37 : x
  2. Step 2: Convert to fraction form
    15,837.45/21,842.23 = 9,780.37/x
  3. Step 3: Cross multiply
    15,837.45x = 21,842.23 × 9,780.37
  4. Step 4: Simplify right side
    15,837.45x = 213,625,091.03
  5. Step 5: Solve for x
    x = 213,625,091.03/15,837.45
  6. Step 6: Final answer
    x = 13,488.60

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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.