Home / 8,328.20-12,503.10-6,686.60

Finding the Fourth Proportional to 8,328.20, 12,503.10 and 6,686.60

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Solution

The fourth proportional to 8,328.20, 12,503.10 and 6,686.60 is: 10,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.20 : 12,503.10 = 6,686.60 : x
  2. Step 2: Convert to fraction form
    8,328.20/12,503.10 = 6,686.60/x
  3. Step 3: Cross multiply
    8,328.20x = 12,503.10 × 6,686.60
  4. Step 4: Simplify right side
    8,328.20x = 83,603,228.46
  5. Step 5: Solve for x
    x = 83,603,228.46/8,328.20
  6. Step 6: Final answer
    x = 10,038.57

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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.