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Finding the Fourth Proportional to 13,294.80, 19,925.40 and 6,722.80

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Solution

The fourth proportional to 13,294.80, 19,925.40 and 6,722.80 is: 10,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,294.80 : 19,925.40 = 6,722.80 : x
  2. Step 2: Convert to fraction form
    13,294.80/19,925.40 = 6,722.80/x
  3. Step 3: Cross multiply
    13,294.80x = 19,925.40 × 6,722.80
  4. Step 4: Simplify right side
    13,294.80x = 133,954,479.12
  5. Step 5: Solve for x
    x = 133,954,479.12/13,294.80
  6. Step 6: Final answer
    x = 10,075.70

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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.