Home / 21,848.20-32,779.18-7,807.90

Finding the Fourth Proportional to 21,848.20, 32,779.18 and 7,807.90

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Solution

The fourth proportional to 21,848.20, 32,779.18 and 7,807.90 is: 11,714.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.20 : 32,779.18 = 7,807.90 : x
  2. Step 2: Convert to fraction form
    21,848.20/32,779.18 = 7,807.90/x
  3. Step 3: Cross multiply
    21,848.20x = 32,779.18 × 7,807.90
  4. Step 4: Simplify right side
    21,848.20x = 255,936,559.52
  5. Step 5: Solve for x
    x = 255,936,559.52/21,848.20
  6. Step 6: Final answer
    x = 11,714.31

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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.