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Finding the Fourth Proportional to 13,884.79, 20,802.93 and 11,559.74

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Solution

The fourth proportional to 13,884.79, 20,802.93 and 11,559.74 is: 17,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,884.79 : 20,802.93 = 11,559.74 : x
  2. Step 2: Convert to fraction form
    13,884.79/20,802.93 = 11,559.74/x
  3. Step 3: Cross multiply
    13,884.79x = 20,802.93 × 11,559.74
  4. Step 4: Simplify right side
    13,884.79x = 240,476,373.18
  5. Step 5: Solve for x
    x = 240,476,373.18/13,884.79
  6. Step 6: Final answer
    x = 17,319.41

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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.