Home / 28,705.80-42,998.14-13,136.52

Finding the Fourth Proportional to 28,705.80, 42,998.14 and 13,136.52

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Solution

The fourth proportional to 28,705.80, 42,998.14 and 13,136.52 is: 19,677.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.80 : 42,998.14 = 13,136.52 : x
  2. Step 2: Convert to fraction form
    28,705.80/42,998.14 = 13,136.52/x
  3. Step 3: Cross multiply
    28,705.80x = 42,998.14 × 13,136.52
  4. Step 4: Simplify right side
    28,705.80x = 564,845,926.07
  5. Step 5: Solve for x
    x = 564,845,926.07/28,705.80
  6. Step 6: Final answer
    x = 19,677.07

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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.