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Finding the Fourth Proportional to 15,366.87, 21,206.07 and 8,652.51

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Solution

The fourth proportional to 15,366.87, 21,206.07 and 8,652.51 is: 11,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366.87 : 21,206.07 = 8,652.51 : x
  2. Step 2: Convert to fraction form
    15,366.87/21,206.07 = 8,652.51/x
  3. Step 3: Cross multiply
    15,366.87x = 21,206.07 × 8,652.51
  4. Step 4: Simplify right side
    15,366.87x = 183,485,732.74
  5. Step 5: Solve for x
    x = 183,485,732.74/15,366.87
  6. Step 6: Final answer
    x = 11,940.35

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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.