Home / 13,858.08-20,787.12-6,467.72

Finding the Fourth Proportional to 13,858.08, 20,787.12 and 6,467.72

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Solution

The fourth proportional to 13,858.08, 20,787.12 and 6,467.72 is: 9,701.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.08 : 20,787.12 = 6,467.72 : x
  2. Step 2: Convert to fraction form
    13,858.08/20,787.12 = 6,467.72/x
  3. Step 3: Cross multiply
    13,858.08x = 20,787.12 × 6,467.72
  4. Step 4: Simplify right side
    13,858.08x = 134,445,271.77
  5. Step 5: Solve for x
    x = 134,445,271.77/13,858.08
  6. Step 6: Final answer
    x = 9,701.58

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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.