Home / 28,603.36-42,887.67-12,805.39

Finding the Fourth Proportional to 28,603.36, 42,887.67 and 12,805.39

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Solution

The fourth proportional to 28,603.36, 42,887.67 and 12,805.39 is: 19,200.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.36 : 42,887.67 = 12,805.39 : x
  2. Step 2: Convert to fraction form
    28,603.36/42,887.67 = 12,805.39/x
  3. Step 3: Cross multiply
    28,603.36x = 42,887.67 × 12,805.39
  4. Step 4: Simplify right side
    28,603.36x = 549,193,340.54
  5. Step 5: Solve for x
    x = 549,193,340.54/28,603.36
  6. Step 6: Final answer
    x = 19,200.31

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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.