Home / 8,688.64-13,018.32-6,210.88

Finding the Fourth Proportional to 8,688.64, 13,018.32 and 6,210.88

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Solution

The fourth proportional to 8,688.64, 13,018.32 and 6,210.88 is: 9,305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.64 : 13,018.32 = 6,210.88 : x
  2. Step 2: Convert to fraction form
    8,688.64/13,018.32 = 6,210.88/x
  3. Step 3: Cross multiply
    8,688.64x = 13,018.32 × 6,210.88
  4. Step 4: Simplify right side
    8,688.64x = 80,855,223.32
  5. Step 5: Solve for x
    x = 80,855,223.32/8,688.64
  6. Step 6: Final answer
    x = 9,305.85

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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.