Home / 15,747.48-21,732.06-9,779.64

Finding the Fourth Proportional to 15,747.48, 21,732.06 and 9,779.64

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Solution

The fourth proportional to 15,747.48, 21,732.06 and 9,779.64 is: 13,496.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.48 : 21,732.06 = 9,779.64 : x
  2. Step 2: Convert to fraction form
    15,747.48/21,732.06 = 9,779.64/x
  3. Step 3: Cross multiply
    15,747.48x = 21,732.06 × 9,779.64
  4. Step 4: Simplify right side
    15,747.48x = 212,531,723.26
  5. Step 5: Solve for x
    x = 212,531,723.26/15,747.48
  6. Step 6: Final answer
    x = 13,496.24

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1.5x scale

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.