Home / 28,655.10-42,988.73-8,662.95

Finding the Fourth Proportional to 28,655.10, 42,988.73 and 8,662.95

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Solution

The fourth proportional to 28,655.10, 42,988.73 and 8,662.95 is: 12,996.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,655.10 : 42,988.73 = 8,662.95 : x
  2. Step 2: Convert to fraction form
    28,655.10/42,988.73 = 8,662.95/x
  3. Step 3: Cross multiply
    28,655.10x = 42,988.73 × 8,662.95
  4. Step 4: Simplify right side
    28,655.10x = 372,409,175.24
  5. Step 5: Solve for x
    x = 372,409,175.24/28,655.10
  6. Step 6: Final answer
    x = 12,996.26

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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.