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Finding the Fourth Proportional to 18,903.98, 28,357.52 and 5,756.47

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Solution

The fourth proportional to 18,903.98, 28,357.52 and 5,756.47 is: 8,635.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.98 : 28,357.52 = 5,756.47 : x
  2. Step 2: Convert to fraction form
    18,903.98/28,357.52 = 5,756.47/x
  3. Step 3: Cross multiply
    18,903.98x = 28,357.52 × 5,756.47
  4. Step 4: Simplify right side
    18,903.98x = 163,239,213.15
  5. Step 5: Solve for x
    x = 163,239,213.15/18,903.98
  6. Step 6: Final answer
    x = 8,635.18

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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.