Home / 21,466.00-29,616.38-12,390.20

Finding the Fourth Proportional to 21,466.00, 29,616.38 and 12,390.20

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Solution

The fourth proportional to 21,466.00, 29,616.38 and 12,390.20 is: 17,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,466.00 : 29,616.38 = 12,390.20 : x
  2. Step 2: Convert to fraction form
    21,466.00/29,616.38 = 12,390.20/x
  3. Step 3: Cross multiply
    21,466.00x = 29,616.38 × 12,390.20
  4. Step 4: Simplify right side
    21,466.00x = 366,952,825.95
  5. Step 5: Solve for x
    x = 366,952,825.95/21,466.00
  6. Step 6: Final answer
    x = 17,094.60

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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.