Home / 21,024.40-31,536.60-11,693.20

Finding the Fourth Proportional to 21,024.40, 31,536.60 and 11,693.20

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Solution

The fourth proportional to 21,024.40, 31,536.60 and 11,693.20 is: 17,539.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.40 : 31,536.60 = 11,693.20 : x
  2. Step 2: Convert to fraction form
    21,024.40/31,536.60 = 11,693.20/x
  3. Step 3: Cross multiply
    21,024.40x = 31,536.60 × 11,693.20
  4. Step 4: Simplify right side
    21,024.40x = 368,763,771.12
  5. Step 5: Solve for x
    x = 368,763,771.12/21,024.40
  6. Step 6: Final answer
    x = 17,539.80

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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.