Home / 28,371.68-42,539.24-13,580.24

Finding the Fourth Proportional to 28,371.68, 42,539.24 and 13,580.24

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Solution

The fourth proportional to 28,371.68, 42,539.24 and 13,580.24 is: 20,361.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.68 : 42,539.24 = 13,580.24 : x
  2. Step 2: Convert to fraction form
    28,371.68/42,539.24 = 13,580.24/x
  3. Step 3: Cross multiply
    28,371.68x = 42,539.24 × 13,580.24
  4. Step 4: Simplify right side
    28,371.68x = 577,693,088.62
  5. Step 5: Solve for x
    x = 577,693,088.62/28,371.68
  6. Step 6: Final answer
    x = 20,361.61

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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.