Home / 12,291.56-16,962.95-6,915.68

Finding the Fourth Proportional to 12,291.56, 16,962.95 and 6,915.68

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Solution

The fourth proportional to 12,291.56, 16,962.95 and 6,915.68 is: 9,543.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.56 : 16,962.95 = 6,915.68 : x
  2. Step 2: Convert to fraction form
    12,291.56/16,962.95 = 6,915.68/x
  3. Step 3: Cross multiply
    12,291.56x = 16,962.95 × 6,915.68
  4. Step 4: Simplify right side
    12,291.56x = 117,310,214.66
  5. Step 5: Solve for x
    x = 117,310,214.66/12,291.56
  6. Step 6: Final answer
    x = 9,543.97

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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.