Home / 28,072.28-42,071.85-11,412.87

Finding the Fourth Proportional to 28,072.28, 42,071.85 and 11,412.87

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Solution

The fourth proportional to 28,072.28, 42,071.85 and 11,412.87 is: 17,104.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.28 : 42,071.85 = 11,412.87 : x
  2. Step 2: Convert to fraction form
    28,072.28/42,071.85 = 11,412.87/x
  3. Step 3: Cross multiply
    28,072.28x = 42,071.85 × 11,412.87
  4. Step 4: Simplify right side
    28,072.28x = 480,160,554.71
  5. Step 5: Solve for x
    x = 480,160,554.71/28,072.28
  6. Step 6: Final answer
    x = 17,104.44

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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.