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Finding the Fourth Proportional to 12,315.81, 16,995.93 and 7,010.97

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Solution

The fourth proportional to 12,315.81, 16,995.93 and 7,010.97 is: 9,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.81 : 16,995.93 = 7,010.97 : x
  2. Step 2: Convert to fraction form
    12,315.81/16,995.93 = 7,010.97/x
  3. Step 3: Cross multiply
    12,315.81x = 16,995.93 × 7,010.97
  4. Step 4: Simplify right side
    12,315.81x = 119,157,955.35
  5. Step 5: Solve for x
    x = 119,157,955.35/12,315.81
  6. Step 6: Final answer
    x = 9,675.20

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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.