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Finding the Fourth Proportional to 28,990.68, 43,502.44 and 12,348.98

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Solution

The fourth proportional to 28,990.68, 43,502.44 and 12,348.98 is: 18,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.68 : 43,502.44 = 12,348.98 : x
  2. Step 2: Convert to fraction form
    28,990.68/43,502.44 = 12,348.98/x
  3. Step 3: Cross multiply
    28,990.68x = 43,502.44 × 12,348.98
  4. Step 4: Simplify right side
    28,990.68x = 537,210,761.51
  5. Step 5: Solve for x
    x = 537,210,761.51/28,990.68
  6. Step 6: Final answer
    x = 18,530.46

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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.