Home / 27,720.37-38,254.23-15,145.39

Finding the Fourth Proportional to 27,720.37, 38,254.23 and 15,145.39

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Solution

The fourth proportional to 27,720.37, 38,254.23 and 15,145.39 is: 20,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.37 : 38,254.23 = 15,145.39 : x
  2. Step 2: Convert to fraction form
    27,720.37/38,254.23 = 15,145.39/x
  3. Step 3: Cross multiply
    27,720.37x = 38,254.23 × 15,145.39
  4. Step 4: Simplify right side
    27,720.37x = 579,374,965.50
  5. Step 5: Solve for x
    x = 579,374,965.50/27,720.37
  6. Step 6: Final answer
    x = 20,900.70

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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.