Home / 28,416.40-42,637.40-13,619.60

Finding the Fourth Proportional to 28,416.40, 42,637.40 and 13,619.60

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Solution

The fourth proportional to 28,416.40, 42,637.40 and 13,619.60 is: 20,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.40 : 42,637.40 = 13,619.60 : x
  2. Step 2: Convert to fraction form
    28,416.40/42,637.40 = 13,619.60/x
  3. Step 3: Cross multiply
    28,416.40x = 42,637.40 × 13,619.60
  4. Step 4: Simplify right side
    28,416.40x = 580,704,333.04
  5. Step 5: Solve for x
    x = 580,704,333.04/28,416.40
  6. Step 6: Final answer
    x = 20,435.53

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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.