Home / 18,815.20-25,968.36-10,856.32

Finding the Fourth Proportional to 18,815.20, 25,968.36 and 10,856.32

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Solution

The fourth proportional to 18,815.20, 25,968.36 and 10,856.32 is: 14,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.20 : 25,968.36 = 10,856.32 : x
  2. Step 2: Convert to fraction form
    18,815.20/25,968.36 = 10,856.32/x
  3. Step 3: Cross multiply
    18,815.20x = 25,968.36 × 10,856.32
  4. Step 4: Simplify right side
    18,815.20x = 281,920,826.04
  5. Step 5: Solve for x
    x = 281,920,826.04/18,815.20
  6. Step 6: Final answer
    x = 14,983.67

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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.