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Finding the Fourth Proportional to 12,998.70, 17,938.22 and 7,030.37

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Solution

The fourth proportional to 12,998.70, 17,938.22 and 7,030.37 is: 9,701.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.70 : 17,938.22 = 7,030.37 : x
  2. Step 2: Convert to fraction form
    12,998.70/17,938.22 = 7,030.37/x
  3. Step 3: Cross multiply
    12,998.70x = 17,938.22 × 7,030.37
  4. Step 4: Simplify right side
    12,998.70x = 126,112,332.42
  5. Step 5: Solve for x
    x = 126,112,332.42/12,998.70
  6. Step 6: Final answer
    x = 9,701.92

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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.