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Finding the Fourth Proportional to 13,012.67, 17,957.55 and 7,347.63

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Solution

The fourth proportional to 13,012.67, 17,957.55 and 7,347.63 is: 10,139.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.67 : 17,957.55 = 7,347.63 : x
  2. Step 2: Convert to fraction form
    13,012.67/17,957.55 = 7,347.63/x
  3. Step 3: Cross multiply
    13,012.67x = 17,957.55 × 7,347.63
  4. Step 4: Simplify right side
    13,012.67x = 131,945,433.11
  5. Step 5: Solve for x
    x = 131,945,433.11/13,012.67
  6. Step 6: Final answer
    x = 10,139.77

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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.