Home / 13,128.58-19,686.30-4,360.42

Finding the Fourth Proportional to 13,128.58, 19,686.30 and 4,360.42

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Solution

The fourth proportional to 13,128.58, 19,686.30 and 4,360.42 is: 6,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.58 : 19,686.30 = 4,360.42 : x
  2. Step 2: Convert to fraction form
    13,128.58/19,686.30 = 4,360.42/x
  3. Step 3: Cross multiply
    13,128.58x = 19,686.30 × 4,360.42
  4. Step 4: Simplify right side
    13,128.58x = 85,840,536.25
  5. Step 5: Solve for x
    x = 85,840,536.25/13,128.58
  6. Step 6: Final answer
    x = 6,538.45

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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.