Home / 28,466.93-39,284.67-15,720.09

Finding the Fourth Proportional to 28,466.93, 39,284.67 and 15,720.09

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Solution

The fourth proportional to 28,466.93, 39,284.67 and 15,720.09 is: 21,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.93 : 39,284.67 = 15,720.09 : x
  2. Step 2: Convert to fraction form
    28,466.93/39,284.67 = 15,720.09/x
  3. Step 3: Cross multiply
    28,466.93x = 39,284.67 × 15,720.09
  4. Step 4: Simplify right side
    28,466.93x = 617,558,680.63
  5. Step 5: Solve for x
    x = 617,558,680.63/28,466.93
  6. Step 6: Final answer
    x = 21,693.90

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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.