Home / 28,528.40-39,369.48-15,953

Finding the Fourth Proportional to 28,528.40, 39,369.48 and 15,953

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Solution

The fourth proportional to 28,528.40, 39,369.48 and 15,953 is: 22,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,528.40 : 39,369.48 = 15,953 : x
  2. Step 2: Convert to fraction form
    28,528.40/39,369.48 = 15,953/x
  3. Step 3: Cross multiply
    28,528.40x = 39,369.48 × 15,953
  4. Step 4: Simplify right side
    28,528.40x = 628,061,314.44
  5. Step 5: Solve for x
    x = 628,061,314.44/28,528.40
  6. Step 6: Final answer
    x = 22,015.30

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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.