Home / 28,083.69-42,133.41-12,290.10

Finding the Fourth Proportional to 28,083.69, 42,133.41 and 12,290.10

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Solution

The fourth proportional to 28,083.69, 42,133.41 and 12,290.10 is: 18,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.69 : 42,133.41 = 12,290.10 : x
  2. Step 2: Convert to fraction form
    28,083.69/42,133.41 = 12,290.10/x
  3. Step 3: Cross multiply
    28,083.69x = 42,133.41 × 12,290.10
  4. Step 4: Simplify right side
    28,083.69x = 517,823,822.24
  5. Step 5: Solve for x
    x = 517,823,822.24/28,083.69
  6. Step 6: Final answer
    x = 18,438.60

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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.