Home / 12,985.75-19,471.64-6,730.25

Finding the Fourth Proportional to 12,985.75, 19,471.64 and 6,730.25

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Solution

The fourth proportional to 12,985.75, 19,471.64 and 6,730.25 is: 10,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.75 : 19,471.64 = 6,730.25 : x
  2. Step 2: Convert to fraction form
    12,985.75/19,471.64 = 6,730.25/x
  3. Step 3: Cross multiply
    12,985.75x = 19,471.64 × 6,730.25
  4. Step 4: Simplify right side
    12,985.75x = 131,048,966.72
  5. Step 5: Solve for x
    x = 131,048,966.72/12,985.75
  6. Step 6: Final answer
    x = 10,091.75

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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.