Home / 27,720.32-38,254.56-15,145.60

Finding the Fourth Proportional to 27,720.32, 38,254.56 and 15,145.60

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Solution

The fourth proportional to 27,720.32, 38,254.56 and 15,145.60 is: 20,901.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.32 : 38,254.56 = 15,145.60 : x
  2. Step 2: Convert to fraction form
    27,720.32/38,254.56 = 15,145.60/x
  3. Step 3: Cross multiply
    27,720.32x = 38,254.56 × 15,145.60
  4. Step 4: Simplify right side
    27,720.32x = 579,388,263.94
  5. Step 5: Solve for x
    x = 579,388,263.94/27,720.32
  6. Step 6: Final answer
    x = 20,901.21

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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.