Home / 25,728.40-38,592.60-11,904.40

Finding the Fourth Proportional to 25,728.40, 38,592.60 and 11,904.40

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Solution

The fourth proportional to 25,728.40, 38,592.60 and 11,904.40 is: 17,856.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.40 : 38,592.60 = 11,904.40 : x
  2. Step 2: Convert to fraction form
    25,728.40/38,592.60 = 11,904.40/x
  3. Step 3: Cross multiply
    25,728.40x = 38,592.60 × 11,904.40
  4. Step 4: Simplify right side
    25,728.40x = 459,421,747.44
  5. Step 5: Solve for x
    x = 459,421,747.44/25,728.40
  6. Step 6: Final answer
    x = 17,856.60

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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.