Home / 10,028.64-13,839.84-5,779.36

Finding the Fourth Proportional to 10,028.64, 13,839.84 and 5,779.36

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Solution

The fourth proportional to 10,028.64, 13,839.84 and 5,779.36 is: 7,975.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,028.64 : 13,839.84 = 5,779.36 : x
  2. Step 2: Convert to fraction form
    10,028.64/13,839.84 = 5,779.36/x
  3. Step 3: Cross multiply
    10,028.64x = 13,839.84 × 5,779.36
  4. Step 4: Simplify right side
    10,028.64x = 79,985,388.81
  5. Step 5: Solve for x
    x = 79,985,388.81/10,028.64
  6. Step 6: Final answer
    x = 7,975.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.