Home / 28,317.01-39,076.64-15,570.21

Finding the Fourth Proportional to 28,317.01, 39,076.64 and 15,570.21

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Solution

The fourth proportional to 28,317.01, 39,076.64 and 15,570.21 is: 21,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.01 : 39,076.64 = 15,570.21 : x
  2. Step 2: Convert to fraction form
    28,317.01/39,076.64 = 15,570.21/x
  3. Step 3: Cross multiply
    28,317.01x = 39,076.64 × 15,570.21
  4. Step 4: Simplify right side
    28,317.01x = 608,431,490.89
  5. Step 5: Solve for x
    x = 608,431,490.89/28,317.01
  6. Step 6: Final answer
    x = 21,486.43

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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.