Home / 28,656.03-42,990.18-8,663.81

Finding the Fourth Proportional to 28,656.03, 42,990.18 and 8,663.81

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Solution

The fourth proportional to 28,656.03, 42,990.18 and 8,663.81 is: 12,997.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.03 : 42,990.18 = 8,663.81 : x
  2. Step 2: Convert to fraction form
    28,656.03/42,990.18 = 8,663.81/x
  3. Step 3: Cross multiply
    28,656.03x = 42,990.18 × 8,663.81
  4. Step 4: Simplify right side
    28,656.03x = 372,458,643.91
  5. Step 5: Solve for x
    x = 372,458,643.91/28,656.03
  6. Step 6: Final answer
    x = 12,997.57

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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.