Home / 21,756.23-32,583.75-21,157.62

Finding the Fourth Proportional to 21,756.23, 32,583.75 and 21,157.62

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Solution

The fourth proportional to 21,756.23, 32,583.75 and 21,157.62 is: 31,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.23 : 32,583.75 = 21,157.62 : x
  2. Step 2: Convert to fraction form
    21,756.23/32,583.75 = 21,157.62/x
  3. Step 3: Cross multiply
    21,756.23x = 32,583.75 × 21,157.62
  4. Step 4: Simplify right side
    21,756.23x = 689,394,567.55
  5. Step 5: Solve for x
    x = 689,394,567.55/21,756.23
  6. Step 6: Final answer
    x = 31,687.22

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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.