Home / 28,205.06-42,310.40-10,440.47

Finding the Fourth Proportional to 28,205.06, 42,310.40 and 10,440.47

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Solution

The fourth proportional to 28,205.06, 42,310.40 and 10,440.47 is: 15,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.06 : 42,310.40 = 10,440.47 : x
  2. Step 2: Convert to fraction form
    28,205.06/42,310.40 = 10,440.47/x
  3. Step 3: Cross multiply
    28,205.06x = 42,310.40 × 10,440.47
  4. Step 4: Simplify right side
    28,205.06x = 441,740,455.19
  5. Step 5: Solve for x
    x = 441,740,455.19/28,205.06
  6. Step 6: Final answer
    x = 15,661.74

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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.