Home / 28,568.75-42,880.77-13,788.08

Finding the Fourth Proportional to 28,568.75, 42,880.77 and 13,788.08

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Solution

The fourth proportional to 28,568.75, 42,880.77 and 13,788.08 is: 20,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,568.75 : 42,880.77 = 13,788.08 : x
  2. Step 2: Convert to fraction form
    28,568.75/42,880.77 = 13,788.08/x
  3. Step 3: Cross multiply
    28,568.75x = 42,880.77 × 13,788.08
  4. Step 4: Simplify right side
    28,568.75x = 591,243,272.82
  5. Step 5: Solve for x
    x = 591,243,272.82/28,568.75
  6. Step 6: Final answer
    x = 20,695.45

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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.