Home / 25,777.60-38,660.64-11,913.28

Finding the Fourth Proportional to 25,777.60, 38,660.64 and 11,913.28

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Solution

The fourth proportional to 25,777.60, 38,660.64 and 11,913.28 is: 17,867.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,777.60 : 38,660.64 = 11,913.28 : x
  2. Step 2: Convert to fraction form
    25,777.60/38,660.64 = 11,913.28/x
  3. Step 3: Cross multiply
    25,777.60x = 38,660.64 × 11,913.28
  4. Step 4: Simplify right side
    25,777.60x = 460,575,029.30
  5. Step 5: Solve for x
    x = 460,575,029.30/25,777.60
  6. Step 6: Final answer
    x = 17,867.26

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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.