Home / 21,858.08-32,779.08-7,814.31

Finding the Fourth Proportional to 21,858.08, 32,779.08 and 7,814.31

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Solution

The fourth proportional to 21,858.08, 32,779.08 and 7,814.31 is: 11,718.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.08 : 32,779.08 = 7,814.31 : x
  2. Step 2: Convert to fraction form
    21,858.08/32,779.08 = 7,814.31/x
  3. Step 3: Cross multiply
    21,858.08x = 32,779.08 × 7,814.31
  4. Step 4: Simplify right side
    21,858.08x = 256,145,892.63
  5. Step 5: Solve for x
    x = 256,145,892.63/21,858.08
  6. Step 6: Final answer
    x = 11,718.59

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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.