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Finding the Fourth Proportional to 15,256.71, 21,054.51 and 9,288.63

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Solution

The fourth proportional to 15,256.71, 21,054.51 and 9,288.63 is: 12,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.71 : 21,054.51 = 9,288.63 : x
  2. Step 2: Convert to fraction form
    15,256.71/21,054.51 = 9,288.63/x
  3. Step 3: Cross multiply
    15,256.71x = 21,054.51 × 9,288.63
  4. Step 4: Simplify right side
    15,256.71x = 195,567,553.22
  5. Step 5: Solve for x
    x = 195,567,553.22/15,256.71
  6. Step 6: Final answer
    x = 12,818.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.