Home / 27,904.96-38,509.12-15,330.24

Finding the Fourth Proportional to 27,904.96, 38,509.12 and 15,330.24

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Solution

The fourth proportional to 27,904.96, 38,509.12 and 15,330.24 is: 21,155.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,904.96 : 38,509.12 = 15,330.24 : x
  2. Step 2: Convert to fraction form
    27,904.96/38,509.12 = 15,330.24/x
  3. Step 3: Cross multiply
    27,904.96x = 38,509.12 × 15,330.24
  4. Step 4: Simplify right side
    27,904.96x = 590,354,051.79
  5. Step 5: Solve for x
    x = 590,354,051.79/27,904.96
  6. Step 6: Final answer
    x = 21,155.88

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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.