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Finding the Fourth Proportional to 13,012.86, 17,957.87 and 7,044.64

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Solution

The fourth proportional to 13,012.86, 17,957.87 and 7,044.64 is: 9,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.86 : 17,957.87 = 7,044.64 : x
  2. Step 2: Convert to fraction form
    13,012.86/17,957.87 = 7,044.64/x
  3. Step 3: Cross multiply
    13,012.86x = 17,957.87 × 7,044.64
  4. Step 4: Simplify right side
    13,012.86x = 126,506,729.32
  5. Step 5: Solve for x
    x = 126,506,729.32/13,012.86
  6. Step 6: Final answer
    x = 9,721.67

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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.