Home / 28,474.90-42,716.79-13,681.06

Finding the Fourth Proportional to 28,474.90, 42,716.79 and 13,681.06

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Solution

The fourth proportional to 28,474.90, 42,716.79 and 13,681.06 is: 20,523.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.90 : 42,716.79 = 13,681.06 : x
  2. Step 2: Convert to fraction form
    28,474.90/42,716.79 = 13,681.06/x
  3. Step 3: Cross multiply
    28,474.90x = 42,716.79 × 13,681.06
  4. Step 4: Simplify right side
    28,474.90x = 584,410,967.00
  5. Step 5: Solve for x
    x = 584,410,967.00/28,474.90
  6. Step 6: Final answer
    x = 20,523.72

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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.