Home / 15,868.26-21,898.16-8,698.18

Finding the Fourth Proportional to 15,868.26, 21,898.16 and 8,698.18

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Solution

The fourth proportional to 15,868.26, 21,898.16 and 8,698.18 is: 12,003.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,868.26 : 21,898.16 = 8,698.18 : x
  2. Step 2: Convert to fraction form
    15,868.26/21,898.16 = 8,698.18/x
  3. Step 3: Cross multiply
    15,868.26x = 21,898.16 × 8,698.18
  4. Step 4: Simplify right side
    15,868.26x = 190,474,137.35
  5. Step 5: Solve for x
    x = 190,474,137.35/15,868.26
  6. Step 6: Final answer
    x = 12,003.47

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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.