Home / 28,277.10-42,420.06-8,553.60

Finding the Fourth Proportional to 28,277.10, 42,420.06 and 8,553.60

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Solution

The fourth proportional to 28,277.10, 42,420.06 and 8,553.60 is: 12,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,277.10 : 42,420.06 = 8,553.60 : x
  2. Step 2: Convert to fraction form
    28,277.10/42,420.06 = 8,553.60/x
  3. Step 3: Cross multiply
    28,277.10x = 42,420.06 × 8,553.60
  4. Step 4: Simplify right side
    28,277.10x = 362,844,225.22
  5. Step 5: Solve for x
    x = 362,844,225.22/28,277.10
  6. Step 6: Final answer
    x = 12,831.73

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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.