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Finding the Fourth Proportional to 13,756.40, 20,633.40 and 4,522.40

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Solution

The fourth proportional to 13,756.40, 20,633.40 and 4,522.40 is: 6,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.40 : 20,633.40 = 4,522.40 : x
  2. Step 2: Convert to fraction form
    13,756.40/20,633.40 = 4,522.40/x
  3. Step 3: Cross multiply
    13,756.40x = 20,633.40 × 4,522.40
  4. Step 4: Simplify right side
    13,756.40x = 93,312,488.16
  5. Step 5: Solve for x
    x = 93,312,488.16/13,756.40
  6. Step 6: Final answer
    x = 6,783.21

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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.