Home / 13,186.10-19,779.15-4,427.17

Finding the Fourth Proportional to 13,186.10, 19,779.15 and 4,427.17

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Solution

The fourth proportional to 13,186.10, 19,779.15 and 4,427.17 is: 6,640.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.10 : 19,779.15 = 4,427.17 : x
  2. Step 2: Convert to fraction form
    13,186.10/19,779.15 = 4,427.17/x
  3. Step 3: Cross multiply
    13,186.10x = 19,779.15 × 4,427.17
  4. Step 4: Simplify right side
    13,186.10x = 87,565,659.51
  5. Step 5: Solve for x
    x = 87,565,659.51/13,186.10
  6. Step 6: Final answer
    x = 6,640.76

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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.