Home / 27,875.13-38,467.96-15,128.43

Finding the Fourth Proportional to 27,875.13, 38,467.96 and 15,128.43

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Solution

The fourth proportional to 27,875.13, 38,467.96 and 15,128.43 is: 20,877.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,875.13 : 38,467.96 = 15,128.43 : x
  2. Step 2: Convert to fraction form
    27,875.13/38,467.96 = 15,128.43/x
  3. Step 3: Cross multiply
    27,875.13x = 38,467.96 × 15,128.43
  4. Step 4: Simplify right side
    27,875.13x = 581,959,647.76
  5. Step 5: Solve for x
    x = 581,959,647.76/27,875.13
  6. Step 6: Final answer
    x = 20,877.38

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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.