Home / 28,369.08-42,558.48-8,647.20

Finding the Fourth Proportional to 28,369.08, 42,558.48 and 8,647.20

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Solution

The fourth proportional to 28,369.08, 42,558.48 and 8,647.20 is: 12,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.08 : 42,558.48 = 8,647.20 : x
  2. Step 2: Convert to fraction form
    28,369.08/42,558.48 = 8,647.20/x
  3. Step 3: Cross multiply
    28,369.08x = 42,558.48 × 8,647.20
  4. Step 4: Simplify right side
    28,369.08x = 368,011,688.26
  5. Step 5: Solve for x
    x = 368,011,688.26/28,369.08
  6. Step 6: Final answer
    x = 12,972.28

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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.