Home / 28,261.31-39,000.65-15,514.57

Finding the Fourth Proportional to 28,261.31, 39,000.65 and 15,514.57

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Solution

The fourth proportional to 28,261.31, 39,000.65 and 15,514.57 is: 21,410.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.31 : 39,000.65 = 15,514.57 : x
  2. Step 2: Convert to fraction form
    28,261.31/39,000.65 = 15,514.57/x
  3. Step 3: Cross multiply
    28,261.31x = 39,000.65 × 15,514.57
  4. Step 4: Simplify right side
    28,261.31x = 605,078,041.89
  5. Step 5: Solve for x
    x = 605,078,041.89/28,261.31
  6. Step 6: Final answer
    x = 21,410.12

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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.