Home / 28,230.49-42,362.14-12,648.12

Finding the Fourth Proportional to 28,230.49, 42,362.14 and 12,648.12

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Solution

The fourth proportional to 28,230.49, 42,362.14 and 12,648.12 is: 18,979.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.49 : 42,362.14 = 12,648.12 : x
  2. Step 2: Convert to fraction form
    28,230.49/42,362.14 = 12,648.12/x
  3. Step 3: Cross multiply
    28,230.49x = 42,362.14 × 12,648.12
  4. Step 4: Simplify right side
    28,230.49x = 535,801,218.37
  5. Step 5: Solve for x
    x = 535,801,218.37/28,230.49
  6. Step 6: Final answer
    x = 18,979.52

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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.