Home / 12,291.18-16,962.12-6,985.95

Finding the Fourth Proportional to 12,291.18, 16,962.12 and 6,985.95

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Solution

The fourth proportional to 12,291.18, 16,962.12 and 6,985.95 is: 9,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.18 : 16,962.12 = 6,985.95 : x
  2. Step 2: Convert to fraction form
    12,291.18/16,962.12 = 6,985.95/x
  3. Step 3: Cross multiply
    12,291.18x = 16,962.12 × 6,985.95
  4. Step 4: Simplify right side
    12,291.18x = 118,496,522.21
  5. Step 5: Solve for x
    x = 118,496,522.21/12,291.18
  6. Step 6: Final answer
    x = 9,640.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.