Home / 14,272.31-19,695.30-7,811.66

Finding the Fourth Proportional to 14,272.31, 19,695.30 and 7,811.66

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Solution

The fourth proportional to 14,272.31, 19,695.30 and 7,811.66 is: 10,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.31 : 19,695.30 = 7,811.66 : x
  2. Step 2: Convert to fraction form
    14,272.31/19,695.30 = 7,811.66/x
  3. Step 3: Cross multiply
    14,272.31x = 19,695.30 × 7,811.66
  4. Step 4: Simplify right side
    14,272.31x = 153,852,987.20
  5. Step 5: Solve for x
    x = 153,852,987.20/14,272.31
  6. Step 6: Final answer
    x = 10,779.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.