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Finding the Fourth Proportional to 18,886.24, 26,054.24 and 15,114.72

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Solution

The fourth proportional to 18,886.24, 26,054.24 and 15,114.72 is: 20,851.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.24 : 26,054.24 = 15,114.72 : x
  2. Step 2: Convert to fraction form
    18,886.24/26,054.24 = 15,114.72/x
  3. Step 3: Cross multiply
    18,886.24x = 26,054.24 × 15,114.72
  4. Step 4: Simplify right side
    18,886.24x = 393,802,542.41
  5. Step 5: Solve for x
    x = 393,802,542.41/18,886.24
  6. Step 6: Final answer
    x = 20,851.29

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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.