Home / 28,368.12-42,556.80-8,379.64

Finding the Fourth Proportional to 28,368.12, 42,556.80 and 8,379.64

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Solution

The fourth proportional to 28,368.12, 42,556.80 and 8,379.64 is: 12,570.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.12 : 42,556.80 = 8,379.64 : x
  2. Step 2: Convert to fraction form
    28,368.12/42,556.80 = 8,379.64/x
  3. Step 3: Cross multiply
    28,368.12x = 42,556.80 × 8,379.64
  4. Step 4: Simplify right side
    28,368.12x = 356,610,663.55
  5. Step 5: Solve for x
    x = 356,610,663.55/28,368.12
  6. Step 6: Final answer
    x = 12,570.82

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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.