Home / 28,675.44-39,570.76-15,929.45

Finding the Fourth Proportional to 28,675.44, 39,570.76 and 15,929.45

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Solution

The fourth proportional to 28,675.44, 39,570.76 and 15,929.45 is: 21,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,675.44 : 39,570.76 = 15,929.45 : x
  2. Step 2: Convert to fraction form
    28,675.44/39,570.76 = 15,929.45/x
  3. Step 3: Cross multiply
    28,675.44x = 39,570.76 × 15,929.45
  4. Step 4: Simplify right side
    28,675.44x = 630,340,245.03
  5. Step 5: Solve for x
    x = 630,340,245.03/28,675.44
  6. Step 6: Final answer
    x = 21,981.89

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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.