Home / 38,420.44-53,023.62-21,656.68

Finding the Fourth Proportional to 38,420.44, 53,023.62 and 21,656.68

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Solution

The fourth proportional to 38,420.44, 53,023.62 and 21,656.68 is: 29,888.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420.44 : 53,023.62 = 21,656.68 : x
  2. Step 2: Convert to fraction form
    38,420.44/53,023.62 = 21,656.68/x
  3. Step 3: Cross multiply
    38,420.44x = 53,023.62 × 21,656.68
  4. Step 4: Simplify right side
    38,420.44x = 1,148,315,570.78
  5. Step 5: Solve for x
    x = 1,148,315,570.78/38,420.44
  6. Step 6: Final answer
    x = 29,888.14

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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.