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Finding the Fourth Proportional to 13,353.23, 20,041.95 and 7,118.48

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Solution

The fourth proportional to 13,353.23, 20,041.95 and 7,118.48 is: 10,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.23 : 20,041.95 = 7,118.48 : x
  2. Step 2: Convert to fraction form
    13,353.23/20,041.95 = 7,118.48/x
  3. Step 3: Cross multiply
    13,353.23x = 20,041.95 × 7,118.48
  4. Step 4: Simplify right side
    13,353.23x = 142,668,270.34
  5. Step 5: Solve for x
    x = 142,668,270.34/13,353.23
  6. Step 6: Final answer
    x = 10,684.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.