Home / 16,855.08-23,255.37-10,139.78

Finding the Fourth Proportional to 16,855.08, 23,255.37 and 10,139.78

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Solution

The fourth proportional to 16,855.08, 23,255.37 and 10,139.78 is: 13,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,855.08 : 23,255.37 = 10,139.78 : x
  2. Step 2: Convert to fraction form
    16,855.08/23,255.37 = 10,139.78/x
  3. Step 3: Cross multiply
    16,855.08x = 23,255.37 × 10,139.78
  4. Step 4: Simplify right side
    16,855.08x = 235,804,219.34
  5. Step 5: Solve for x
    x = 235,804,219.34/16,855.08
  6. Step 6: Final answer
    x = 13,990.10

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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.