Home / 28,637.45-39,519.93-15,891.49

Finding the Fourth Proportional to 28,637.45, 39,519.93 and 15,891.49

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Solution

The fourth proportional to 28,637.45, 39,519.93 and 15,891.49 is: 21,930.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.45 : 39,519.93 = 15,891.49 : x
  2. Step 2: Convert to fraction form
    28,637.45/39,519.93 = 15,891.49/x
  3. Step 3: Cross multiply
    28,637.45x = 39,519.93 × 15,891.49
  4. Step 4: Simplify right side
    28,637.45x = 628,030,547.30
  5. Step 5: Solve for x
    x = 628,030,547.30/28,637.45
  6. Step 6: Final answer
    x = 21,930.39

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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.