Home / 28,012.56-42,070.68-18,785.04

Finding the Fourth Proportional to 28,012.56, 42,070.68 and 18,785.04

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Solution

The fourth proportional to 28,012.56, 42,070.68 and 18,785.04 is: 28,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.56 : 42,070.68 = 18,785.04 : x
  2. Step 2: Convert to fraction form
    28,012.56/42,070.68 = 18,785.04/x
  3. Step 3: Cross multiply
    28,012.56x = 42,070.68 × 18,785.04
  4. Step 4: Simplify right side
    28,012.56x = 790,299,406.63
  5. Step 5: Solve for x
    x = 790,299,406.63/28,012.56
  6. Step 6: Final answer
    x = 28,212.32

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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.