Home / 28,291.86-42,438.39-8,570.37

Finding the Fourth Proportional to 28,291.86, 42,438.39 and 8,570.37

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Solution

The fourth proportional to 28,291.86, 42,438.39 and 8,570.37 is: 12,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.86 : 42,438.39 = 8,570.37 : x
  2. Step 2: Convert to fraction form
    28,291.86/42,438.39 = 8,570.37/x
  3. Step 3: Cross multiply
    28,291.86x = 42,438.39 × 8,570.37
  4. Step 4: Simplify right side
    28,291.86x = 363,712,704.50
  5. Step 5: Solve for x
    x = 363,712,704.50/28,291.86
  6. Step 6: Final answer
    x = 12,855.74

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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.