Home / 28,101.21-42,172.61-13,310.21

Finding the Fourth Proportional to 28,101.21, 42,172.61 and 13,310.21

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Solution

The fourth proportional to 28,101.21, 42,172.61 and 13,310.21 is: 19,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.21 : 42,172.61 = 13,310.21 : x
  2. Step 2: Convert to fraction form
    28,101.21/42,172.61 = 13,310.21/x
  3. Step 3: Cross multiply
    28,101.21x = 42,172.61 × 13,310.21
  4. Step 4: Simplify right side
    28,101.21x = 561,326,017.93
  5. Step 5: Solve for x
    x = 561,326,017.93/28,101.21
  6. Step 6: Final answer
    x = 19,975.15

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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.