Home / 28,043.28-42,072.86-11,415.24

Finding the Fourth Proportional to 28,043.28, 42,072.86 and 11,415.24

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Solution

The fourth proportional to 28,043.28, 42,072.86 and 11,415.24 is: 17,126.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.28 : 42,072.86 = 11,415.24 : x
  2. Step 2: Convert to fraction form
    28,043.28/42,072.86 = 11,415.24/x
  3. Step 3: Cross multiply
    28,043.28x = 42,072.86 × 11,415.24
  4. Step 4: Simplify right side
    28,043.28x = 480,271,737.31
  5. Step 5: Solve for x
    x = 480,271,737.31/28,043.28
  6. Step 6: Final answer
    x = 17,126.09

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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.