Home / 27,720.56-38,254.38-15,145.31

Finding the Fourth Proportional to 27,720.56, 38,254.38 and 15,145.31

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Solution

The fourth proportional to 27,720.56, 38,254.38 and 15,145.31 is: 20,900.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.56 : 38,254.38 = 15,145.31 : x
  2. Step 2: Convert to fraction form
    27,720.56/38,254.38 = 15,145.31/x
  3. Step 3: Cross multiply
    27,720.56x = 38,254.38 × 15,145.31
  4. Step 4: Simplify right side
    27,720.56x = 579,374,482.80
  5. Step 5: Solve for x
    x = 579,374,482.80/27,720.56
  6. Step 6: Final answer
    x = 20,900.53

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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.