Home / 28,315.90-39,072.54-15,566.98

Finding the Fourth Proportional to 28,315.90, 39,072.54 and 15,566.98

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Solution

The fourth proportional to 28,315.90, 39,072.54 and 15,566.98 is: 21,480.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.90 : 39,072.54 = 15,566.98 : x
  2. Step 2: Convert to fraction form
    28,315.90/39,072.54 = 15,566.98/x
  3. Step 3: Cross multiply
    28,315.90x = 39,072.54 × 15,566.98
  4. Step 4: Simplify right side
    28,315.90x = 608,241,448.73
  5. Step 5: Solve for x
    x = 608,241,448.73/28,315.90
  6. Step 6: Final answer
    x = 21,480.56

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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.