Home / 28,083.04-42,132.36-12,285.24

Finding the Fourth Proportional to 28,083.04, 42,132.36 and 12,285.24

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Solution

The fourth proportional to 28,083.04, 42,132.36 and 12,285.24 is: 18,431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083.04 : 42,132.36 = 12,285.24 : x
  2. Step 2: Convert to fraction form
    28,083.04/42,132.36 = 12,285.24/x
  3. Step 3: Cross multiply
    28,083.04x = 42,132.36 × 12,285.24
  4. Step 4: Simplify right side
    28,083.04x = 517,606,154.37
  5. Step 5: Solve for x
    x = 517,606,154.37/28,083.04
  6. Step 6: Final answer
    x = 18,431.27

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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.