Home / 25,619.84-38,428.32-8,980.64

Finding the Fourth Proportional to 25,619.84, 38,428.32 and 8,980.64

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Solution

The fourth proportional to 25,619.84, 38,428.32 and 8,980.64 is: 13,470.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,619.84 : 38,428.32 = 8,980.64 : x
  2. Step 2: Convert to fraction form
    25,619.84/38,428.32 = 8,980.64/x
  3. Step 3: Cross multiply
    25,619.84x = 38,428.32 × 8,980.64
  4. Step 4: Simplify right side
    25,619.84x = 345,110,907.72
  5. Step 5: Solve for x
    x = 345,110,907.72/25,619.84
  6. Step 6: Final answer
    x = 13,470.46

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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.