Home / 12,688.32-19,038.24-6,536.64

Finding the Fourth Proportional to 12,688.32, 19,038.24 and 6,536.64

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Solution

The fourth proportional to 12,688.32, 19,038.24 and 6,536.64 is: 9,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.32 : 19,038.24 = 6,536.64 : x
  2. Step 2: Convert to fraction form
    12,688.32/19,038.24 = 6,536.64/x
  3. Step 3: Cross multiply
    12,688.32x = 19,038.24 × 6,536.64
  4. Step 4: Simplify right side
    12,688.32x = 124,446,121.11
  5. Step 5: Solve for x
    x = 124,446,121.11/12,688.32
  6. Step 6: Final answer
    x = 9,807.93

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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.