Home / 28,371.70-42,539.28-13,580.26

Finding the Fourth Proportional to 28,371.70, 42,539.28 and 13,580.26

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Solution

The fourth proportional to 28,371.70, 42,539.28 and 13,580.26 is: 20,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.70 : 42,539.28 = 13,580.26 : x
  2. Step 2: Convert to fraction form
    28,371.70/42,539.28 = 13,580.26/x
  3. Step 3: Cross multiply
    28,371.70x = 42,539.28 × 13,580.26
  4. Step 4: Simplify right side
    28,371.70x = 577,694,482.61
  5. Step 5: Solve for x
    x = 577,694,482.61/28,371.70
  6. Step 6: Final answer
    x = 20,361.64

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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.