Home / 28,257.40-42,386.42-8,536.12

Finding the Fourth Proportional to 28,257.40, 42,386.42 and 8,536.12

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Solution

The fourth proportional to 28,257.40, 42,386.42 and 8,536.12 is: 12,804.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,257.40 : 42,386.42 = 8,536.12 : x
  2. Step 2: Convert to fraction form
    28,257.40/42,386.42 = 8,536.12/x
  3. Step 3: Cross multiply
    28,257.40x = 42,386.42 × 8,536.12
  4. Step 4: Simplify right side
    28,257.40x = 361,815,567.49
  5. Step 5: Solve for x
    x = 361,815,567.49/28,257.40
  6. Step 6: Final answer
    x = 12,804.28

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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.