Home / 28,455.18-42,678.73-15,636.32

Finding the Fourth Proportional to 28,455.18, 42,678.73 and 15,636.32

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Solution

The fourth proportional to 28,455.18, 42,678.73 and 15,636.32 is: 23,452.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.18 : 42,678.73 = 15,636.32 : x
  2. Step 2: Convert to fraction form
    28,455.18/42,678.73 = 15,636.32/x
  3. Step 3: Cross multiply
    28,455.18x = 42,678.73 × 15,636.32
  4. Step 4: Simplify right side
    28,455.18x = 667,338,347.08
  5. Step 5: Solve for x
    x = 667,338,347.08/28,455.18
  6. Step 6: Final answer
    x = 23,452.26

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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.