Home / 28,281.51-39,028.58-15,706.26

Finding the Fourth Proportional to 28,281.51, 39,028.58 and 15,706.26

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Solution

The fourth proportional to 28,281.51, 39,028.58 and 15,706.26 is: 21,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.51 : 39,028.58 = 15,706.26 : x
  2. Step 2: Convert to fraction form
    28,281.51/39,028.58 = 15,706.26/x
  3. Step 3: Cross multiply
    28,281.51x = 39,028.58 × 15,706.26
  4. Step 4: Simplify right side
    28,281.51x = 612,992,946.38
  5. Step 5: Solve for x
    x = 612,992,946.38/28,281.51
  6. Step 6: Final answer
    x = 21,674.69

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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.