Home / 15,698.16-21,662.10-8,622.81

Finding the Fourth Proportional to 15,698.16, 21,662.10 and 8,622.81

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Solution

The fourth proportional to 15,698.16, 21,662.10 and 8,622.81 is: 11,898.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698.16 : 21,662.10 = 8,622.81 : x
  2. Step 2: Convert to fraction form
    15,698.16/21,662.10 = 8,622.81/x
  3. Step 3: Cross multiply
    15,698.16x = 21,662.10 × 8,622.81
  4. Step 4: Simplify right side
    15,698.16x = 186,788,172.50
  5. Step 5: Solve for x
    x = 186,788,172.50/15,698.16
  6. Step 6: Final answer
    x = 11,898.73

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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.