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Finding the Fourth Proportional to 18,802.98, 28,199.82 and 8,275.64

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Solution

The fourth proportional to 18,802.98, 28,199.82 and 8,275.64 is: 12,411.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.98 : 28,199.82 = 8,275.64 : x
  2. Step 2: Convert to fraction form
    18,802.98/28,199.82 = 8,275.64/x
  3. Step 3: Cross multiply
    18,802.98x = 28,199.82 × 8,275.64
  4. Step 4: Simplify right side
    18,802.98x = 233,371,417.39
  5. Step 5: Solve for x
    x = 233,371,417.39/18,802.98
  6. Step 6: Final answer
    x = 12,411.41

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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.