Home / 20,258.40-30,378.48-8,565.60

Finding the Fourth Proportional to 20,258.40, 30,378.48 and 8,565.60

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Solution

The fourth proportional to 20,258.40, 30,378.48 and 8,565.60 is: 12,844.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.40 : 30,378.48 = 8,565.60 : x
  2. Step 2: Convert to fraction form
    20,258.40/30,378.48 = 8,565.60/x
  3. Step 3: Cross multiply
    20,258.40x = 30,378.48 × 8,565.60
  4. Step 4: Simplify right side
    20,258.40x = 260,209,908.29
  5. Step 5: Solve for x
    x = 260,209,908.29/20,258.40
  6. Step 6: Final answer
    x = 12,844.54

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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.