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Finding the Fourth Proportional to 18,803.93, 28,150.49 and 13,895.51

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Solution

The fourth proportional to 18,803.93, 28,150.49 and 13,895.51 is: 20,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.93 : 28,150.49 = 13,895.51 : x
  2. Step 2: Convert to fraction form
    18,803.93/28,150.49 = 13,895.51/x
  3. Step 3: Cross multiply
    18,803.93x = 28,150.49 × 13,895.51
  4. Step 4: Simplify right side
    18,803.93x = 391,165,309.29
  5. Step 5: Solve for x
    x = 391,165,309.29/18,803.93
  6. Step 6: Final answer
    x = 20,802.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.