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Finding the Fourth Proportional to 15,723.19, 21,696.24 and 9,006.99

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Solution

The fourth proportional to 15,723.19, 21,696.24 and 9,006.99 is: 12,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.19 : 21,696.24 = 9,006.99 : x
  2. Step 2: Convert to fraction form
    15,723.19/21,696.24 = 9,006.99/x
  3. Step 3: Cross multiply
    15,723.19x = 21,696.24 × 9,006.99
  4. Step 4: Simplify right side
    15,723.19x = 195,417,816.72
  5. Step 5: Solve for x
    x = 195,417,816.72/15,723.19
  6. Step 6: Final answer
    x = 12,428.64

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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.