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Finding the Fourth Proportional to 15,433.50, 21,303.09 and 9,844.50

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Solution

The fourth proportional to 15,433.50, 21,303.09 and 9,844.50 is: 13,588.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.50 : 21,303.09 = 9,844.50 : x
  2. Step 2: Convert to fraction form
    15,433.50/21,303.09 = 9,844.50/x
  3. Step 3: Cross multiply
    15,433.50x = 21,303.09 × 9,844.50
  4. Step 4: Simplify right side
    15,433.50x = 209,718,269.51
  5. Step 5: Solve for x
    x = 209,718,269.51/15,433.50
  6. Step 6: Final answer
    x = 13,588.51

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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.