Home / 12,316.06-16,995.90-6,938.78

Finding the Fourth Proportional to 12,316.06, 16,995.90 and 6,938.78

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Solution

The fourth proportional to 12,316.06, 16,995.90 and 6,938.78 is: 9,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.06 : 16,995.90 = 6,938.78 : x
  2. Step 2: Convert to fraction form
    12,316.06/16,995.90 = 6,938.78/x
  3. Step 3: Cross multiply
    12,316.06x = 16,995.90 × 6,938.78
  4. Step 4: Simplify right side
    12,316.06x = 117,930,752.04
  5. Step 5: Solve for x
    x = 117,930,752.04/12,316.06
  6. Step 6: Final answer
    x = 9,575.36

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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.