Home / 20,317.74-28,036.54-11,365.02

Finding the Fourth Proportional to 20,317.74, 28,036.54 and 11,365.02

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Solution

The fourth proportional to 20,317.74, 28,036.54 and 11,365.02 is: 15,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.74 : 28,036.54 = 11,365.02 : x
  2. Step 2: Convert to fraction form
    20,317.74/28,036.54 = 11,365.02/x
  3. Step 3: Cross multiply
    20,317.74x = 28,036.54 × 11,365.02
  4. Step 4: Simplify right side
    20,317.74x = 318,635,837.83
  5. Step 5: Solve for x
    x = 318,635,837.83/20,317.74
  6. Step 6: Final answer
    x = 15,682.64

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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.