Home / 18,538.50-25,583.14-10,155.30

Finding the Fourth Proportional to 18,538.50, 25,583.14 and 10,155.30

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Solution

The fourth proportional to 18,538.50, 25,583.14 and 10,155.30 is: 14,014.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.50 : 25,583.14 = 10,155.30 : x
  2. Step 2: Convert to fraction form
    18,538.50/25,583.14 = 10,155.30/x
  3. Step 3: Cross multiply
    18,538.50x = 25,583.14 × 10,155.30
  4. Step 4: Simplify right side
    18,538.50x = 259,804,461.64
  5. Step 5: Solve for x
    x = 259,804,461.64/18,538.50
  6. Step 6: Final answer
    x = 14,014.32

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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.