Home / 28,962.25-39,967.91-15,714.25

Finding the Fourth Proportional to 28,962.25, 39,967.91 and 15,714.25

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Solution

The fourth proportional to 28,962.25, 39,967.91 and 15,714.25 is: 21,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,962.25 : 39,967.91 = 15,714.25 : x
  2. Step 2: Convert to fraction form
    28,962.25/39,967.91 = 15,714.25/x
  3. Step 3: Cross multiply
    28,962.25x = 39,967.91 × 15,714.25
  4. Step 4: Simplify right side
    28,962.25x = 628,065,729.72
  5. Step 5: Solve for x
    x = 628,065,729.72/28,962.25
  6. Step 6: Final answer
    x = 21,685.67

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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.