Home / 10,138.95-15,171.30-5,980.77

Finding the Fourth Proportional to 10,138.95, 15,171.30 and 5,980.77

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Solution

The fourth proportional to 10,138.95, 15,171.30 and 5,980.77 is: 8,949.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.95 : 15,171.30 = 5,980.77 : x
  2. Step 2: Convert to fraction form
    10,138.95/15,171.30 = 5,980.77/x
  3. Step 3: Cross multiply
    10,138.95x = 15,171.30 × 5,980.77
  4. Step 4: Simplify right side
    10,138.95x = 90,736,055.90
  5. Step 5: Solve for x
    x = 90,736,055.90/10,138.95
  6. Step 6: Final answer
    x = 8,949.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.