Home / 21,271.22-29,355.60-17,728.28

Finding the Fourth Proportional to 21,271.22, 29,355.60 and 17,728.28

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Solution

The fourth proportional to 21,271.22, 29,355.60 and 17,728.28 is: 24,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.22 : 29,355.60 = 17,728.28 : x
  2. Step 2: Convert to fraction form
    21,271.22/29,355.60 = 17,728.28/x
  3. Step 3: Cross multiply
    21,271.22x = 29,355.60 × 17,728.28
  4. Step 4: Simplify right side
    21,271.22x = 520,424,296.37
  5. Step 5: Solve for x
    x = 520,424,296.37/21,271.22
  6. Step 6: Final answer
    x = 24,466.12

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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.