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Finding the Fourth Proportional to 15,436.92, 21,303.03 and 8,363.34

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Solution

The fourth proportional to 15,436.92, 21,303.03 and 8,363.34 is: 11,541.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.92 : 21,303.03 = 8,363.34 : x
  2. Step 2: Convert to fraction form
    15,436.92/21,303.03 = 8,363.34/x
  3. Step 3: Cross multiply
    15,436.92x = 21,303.03 × 8,363.34
  4. Step 4: Simplify right side
    15,436.92x = 178,164,430.85
  5. Step 5: Solve for x
    x = 178,164,430.85/15,436.92
  6. Step 6: Final answer
    x = 11,541.45

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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.