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Finding the Fourth Proportional to 15,235.18, 21,024 and 8,862.28

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Solution

The fourth proportional to 15,235.18, 21,024 and 8,862.28 is: 12,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.18 : 21,024 = 8,862.28 : x
  2. Step 2: Convert to fraction form
    15,235.18/21,024 = 8,862.28/x
  3. Step 3: Cross multiply
    15,235.18x = 21,024 × 8,862.28
  4. Step 4: Simplify right side
    15,235.18x = 186,320,574.72
  5. Step 5: Solve for x
    x = 186,320,574.72/15,235.18
  6. Step 6: Final answer
    x = 12,229.63

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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.