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Finding the Fourth Proportional to 15,235.34, 21,024.93 and 8,947.82

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Solution

The fourth proportional to 15,235.34, 21,024.93 and 8,947.82 is: 12,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.34 : 21,024.93 = 8,947.82 : x
  2. Step 2: Convert to fraction form
    15,235.34/21,024.93 = 8,947.82/x
  3. Step 3: Cross multiply
    15,235.34x = 21,024.93 × 8,947.82
  4. Step 4: Simplify right side
    15,235.34x = 188,127,289.15
  5. Step 5: Solve for x
    x = 188,127,289.15/15,235.34
  6. Step 6: Final answer
    x = 12,348.09

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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.