Home / 10,015.40-13,821.08-5,539.05

Finding the Fourth Proportional to 10,015.40, 13,821.08 and 5,539.05

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Solution

The fourth proportional to 10,015.40, 13,821.08 and 5,539.05 is: 7,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.40 : 13,821.08 = 5,539.05 : x
  2. Step 2: Convert to fraction form
    10,015.40/13,821.08 = 5,539.05/x
  3. Step 3: Cross multiply
    10,015.40x = 13,821.08 × 5,539.05
  4. Step 4: Simplify right side
    10,015.40x = 76,555,656.64
  5. Step 5: Solve for x
    x = 76,555,656.64/10,015.40
  6. Step 6: Final answer
    x = 7,643.80

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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.