Home / 28,530.72-39,372.17-15,955.47

Finding the Fourth Proportional to 28,530.72, 39,372.17 and 15,955.47

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Solution

The fourth proportional to 28,530.72, 39,372.17 and 15,955.47 is: 22,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.72 : 39,372.17 = 15,955.47 : x
  2. Step 2: Convert to fraction form
    28,530.72/39,372.17 = 15,955.47/x
  3. Step 3: Cross multiply
    28,530.72x = 39,372.17 × 15,955.47
  4. Step 4: Simplify right side
    28,530.72x = 628,201,397.49
  5. Step 5: Solve for x
    x = 628,201,397.49/28,530.72
  6. Step 6: Final answer
    x = 22,018.42

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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.