Home / 15,352.42-21,185.46-8,638.32

Finding the Fourth Proportional to 15,352.42, 21,185.46 and 8,638.32

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Solution

The fourth proportional to 15,352.42, 21,185.46 and 8,638.32 is: 11,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,352.42 : 21,185.46 = 8,638.32 : x
  2. Step 2: Convert to fraction form
    15,352.42/21,185.46 = 8,638.32/x
  3. Step 3: Cross multiply
    15,352.42x = 21,185.46 × 8,638.32
  4. Step 4: Simplify right side
    15,352.42x = 183,006,782.83
  5. Step 5: Solve for x
    x = 183,006,782.83/15,352.42
  6. Step 6: Final answer
    x = 11,920.39

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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.