Home / 12,955.19-19,427.92-4,187.75

Finding the Fourth Proportional to 12,955.19, 19,427.92 and 4,187.75

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Solution

The fourth proportional to 12,955.19, 19,427.92 and 4,187.75 is: 6,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.19 : 19,427.92 = 4,187.75 : x
  2. Step 2: Convert to fraction form
    12,955.19/19,427.92 = 4,187.75/x
  3. Step 3: Cross multiply
    12,955.19x = 19,427.92 × 4,187.75
  4. Step 4: Simplify right side
    12,955.19x = 81,359,271.98
  5. Step 5: Solve for x
    x = 81,359,271.98/12,955.19
  6. Step 6: Final answer
    x = 6,280.05

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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.