Home / 18,430.19-25,431.09-10,876.83

Finding the Fourth Proportional to 18,430.19, 25,431.09 and 10,876.83

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Solution

The fourth proportional to 18,430.19, 25,431.09 and 10,876.83 is: 15,008.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.19 : 25,431.09 = 10,876.83 : x
  2. Step 2: Convert to fraction form
    18,430.19/25,431.09 = 10,876.83/x
  3. Step 3: Cross multiply
    18,430.19x = 25,431.09 × 10,876.83
  4. Step 4: Simplify right side
    18,430.19x = 276,609,642.64
  5. Step 5: Solve for x
    x = 276,609,642.64/18,430.19
  6. Step 6: Final answer
    x = 15,008.51

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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.