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Finding the Fourth Proportional to 15,838.56, 21,857.04 and 9,551.52

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Solution

The fourth proportional to 15,838.56, 21,857.04 and 9,551.52 is: 13,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,838.56 : 21,857.04 = 9,551.52 : x
  2. Step 2: Convert to fraction form
    15,838.56/21,857.04 = 9,551.52/x
  3. Step 3: Cross multiply
    15,838.56x = 21,857.04 × 9,551.52
  4. Step 4: Simplify right side
    15,838.56x = 208,767,954.70
  5. Step 5: Solve for x
    x = 208,767,954.70/15,838.56
  6. Step 6: Final answer
    x = 13,180.99

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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.