Home / 28,305.15-42,457.56-7,245.15

Finding the Fourth Proportional to 28,305.15, 42,457.56 and 7,245.15

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Solution

The fourth proportional to 28,305.15, 42,457.56 and 7,245.15 is: 10,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.15 : 42,457.56 = 7,245.15 : x
  2. Step 2: Convert to fraction form
    28,305.15/42,457.56 = 7,245.15/x
  3. Step 3: Cross multiply
    28,305.15x = 42,457.56 × 7,245.15
  4. Step 4: Simplify right side
    28,305.15x = 307,611,390.83
  5. Step 5: Solve for x
    x = 307,611,390.83/28,305.15
  6. Step 6: Final answer
    x = 10,867.68

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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.