Home / 27,812.16-38,369.52-15,873.12

Finding the Fourth Proportional to 27,812.16, 38,369.52 and 15,873.12

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Solution

The fourth proportional to 27,812.16, 38,369.52 and 15,873.12 is: 21,898.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,812.16 : 38,369.52 = 15,873.12 : x
  2. Step 2: Convert to fraction form
    27,812.16/38,369.52 = 15,873.12/x
  3. Step 3: Cross multiply
    27,812.16x = 38,369.52 × 15,873.12
  4. Step 4: Simplify right side
    27,812.16x = 609,043,995.30
  5. Step 5: Solve for x
    x = 609,043,995.30/27,812.16
  6. Step 6: Final answer
    x = 21,898.48

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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.