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Finding the Fourth Proportional to 21,035.52, 31,554.24 and 7,883.52

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Solution

The fourth proportional to 21,035.52, 31,554.24 and 7,883.52 is: 11,825.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.52 : 31,554.24 = 7,883.52 : x
  2. Step 2: Convert to fraction form
    21,035.52/31,554.24 = 7,883.52/x
  3. Step 3: Cross multiply
    21,035.52x = 31,554.24 × 7,883.52
  4. Step 4: Simplify right side
    21,035.52x = 248,758,482.12
  5. Step 5: Solve for x
    x = 248,758,482.12/21,035.52
  6. Step 6: Final answer
    x = 11,825.64

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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.