Home / 28,349.58-39,121.47-15,774.06

Finding the Fourth Proportional to 28,349.58, 39,121.47 and 15,774.06

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Solution

The fourth proportional to 28,349.58, 39,121.47 and 15,774.06 is: 21,767.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,349.58 : 39,121.47 = 15,774.06 : x
  2. Step 2: Convert to fraction form
    28,349.58/39,121.47 = 15,774.06/x
  3. Step 3: Cross multiply
    28,349.58x = 39,121.47 × 15,774.06
  4. Step 4: Simplify right side
    28,349.58x = 617,104,415.07
  5. Step 5: Solve for x
    x = 617,104,415.07/28,349.58
  6. Step 6: Final answer
    x = 21,767.67

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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.