Home / 27,921.15-38,530.74-15,345.63

Finding the Fourth Proportional to 27,921.15, 38,530.74 and 15,345.63

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Solution

The fourth proportional to 27,921.15, 38,530.74 and 15,345.63 is: 21,176.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.15 : 38,530.74 = 15,345.63 : x
  2. Step 2: Convert to fraction form
    27,921.15/38,530.74 = 15,345.63/x
  3. Step 3: Cross multiply
    27,921.15x = 38,530.74 × 15,345.63
  4. Step 4: Simplify right side
    27,921.15x = 591,278,479.67
  5. Step 5: Solve for x
    x = 591,278,479.67/27,921.15
  6. Step 6: Final answer
    x = 21,176.72

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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.