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Finding the Fourth Proportional to 13,756.71, 18,984.33 and 7,469.10

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Solution

The fourth proportional to 13,756.71, 18,984.33 and 7,469.10 is: 10,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.71 : 18,984.33 = 7,469.10 : x
  2. Step 2: Convert to fraction form
    13,756.71/18,984.33 = 7,469.10/x
  3. Step 3: Cross multiply
    13,756.71x = 18,984.33 × 7,469.10
  4. Step 4: Simplify right side
    13,756.71x = 141,795,859.20
  5. Step 5: Solve for x
    x = 141,795,859.20/13,756.71
  6. Step 6: Final answer
    x = 10,307.40

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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.