Home / 28,260.40-42,390.60-8,536.90

Finding the Fourth Proportional to 28,260.40, 42,390.60 and 8,536.90

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Solution

The fourth proportional to 28,260.40, 42,390.60 and 8,536.90 is: 12,805.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.40 : 42,390.60 = 8,536.90 : x
  2. Step 2: Convert to fraction form
    28,260.40/42,390.60 = 8,536.90/x
  3. Step 3: Cross multiply
    28,260.40x = 42,390.60 × 8,536.90
  4. Step 4: Simplify right side
    28,260.40x = 361,884,313.14
  5. Step 5: Solve for x
    x = 361,884,313.14/28,260.40
  6. Step 6: Final answer
    x = 12,805.35

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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.