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Finding the Fourth Proportional to 18,904.05, 28,162.08 and 18,051.12

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Solution

The fourth proportional to 18,904.05, 28,162.08 and 18,051.12 is: 26,891.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.05 : 28,162.08 = 18,051.12 : x
  2. Step 2: Convert to fraction form
    18,904.05/28,162.08 = 18,051.12/x
  3. Step 3: Cross multiply
    18,904.05x = 28,162.08 × 18,051.12
  4. Step 4: Simplify right side
    18,904.05x = 508,357,085.53
  5. Step 5: Solve for x
    x = 508,357,085.53/18,904.05
  6. Step 6: Final answer
    x = 26,891.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.