Home / 28,511.84-39,314.22-18,426.98

Finding the Fourth Proportional to 28,511.84, 39,314.22 and 18,426.98

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Solution

The fourth proportional to 28,511.84, 39,314.22 and 18,426.98 is: 25,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.84 : 39,314.22 = 18,426.98 : x
  2. Step 2: Convert to fraction form
    28,511.84/39,314.22 = 18,426.98/x
  3. Step 3: Cross multiply
    28,511.84x = 39,314.22 × 18,426.98
  4. Step 4: Simplify right side
    28,511.84x = 724,442,345.66
  5. Step 5: Solve for x
    x = 724,442,345.66/28,511.84
  6. Step 6: Final answer
    x = 25,408.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.