Home / 28,028.74-38,680.10-15,281.94

Finding the Fourth Proportional to 28,028.74, 38,680.10 and 15,281.94

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Solution

The fourth proportional to 28,028.74, 38,680.10 and 15,281.94 is: 21,089.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.74 : 38,680.10 = 15,281.94 : x
  2. Step 2: Convert to fraction form
    28,028.74/38,680.10 = 15,281.94/x
  3. Step 3: Cross multiply
    28,028.74x = 38,680.10 × 15,281.94
  4. Step 4: Simplify right side
    28,028.74x = 591,106,967.39
  5. Step 5: Solve for x
    x = 591,106,967.39/28,028.74
  6. Step 6: Final answer
    x = 21,089.32

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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.