Home / 20,779.59-31,173.45-7,632.06

Finding the Fourth Proportional to 20,779.59, 31,173.45 and 7,632.06

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Solution

The fourth proportional to 20,779.59, 31,173.45 and 7,632.06 is: 11,449.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.59 : 31,173.45 = 7,632.06 : x
  2. Step 2: Convert to fraction form
    20,779.59/31,173.45 = 7,632.06/x
  3. Step 3: Cross multiply
    20,779.59x = 31,173.45 × 7,632.06
  4. Step 4: Simplify right side
    20,779.59x = 237,917,640.81
  5. Step 5: Solve for x
    x = 237,917,640.81/20,779.59
  6. Step 6: Final answer
    x = 11,449.58

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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.