Home / 18,538.70-25,583.31-10,155.20

Finding the Fourth Proportional to 18,538.70, 25,583.31 and 10,155.20

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Solution

The fourth proportional to 18,538.70, 25,583.31 and 10,155.20 is: 14,014.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.70 : 25,583.31 = 10,155.20 : x
  2. Step 2: Convert to fraction form
    18,538.70/25,583.31 = 10,155.20/x
  3. Step 3: Cross multiply
    18,538.70x = 25,583.31 × 10,155.20
  4. Step 4: Simplify right side
    18,538.70x = 259,803,501.80
  5. Step 5: Solve for x
    x = 259,803,501.80/18,538.70
  6. Step 6: Final answer
    x = 14,014.12

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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.