Home / 38,142.48-52,637.91-21,145.71

Finding the Fourth Proportional to 38,142.48, 52,637.91 and 21,145.71

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Solution

The fourth proportional to 38,142.48, 52,637.91 and 21,145.71 is: 29,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.48 : 52,637.91 = 21,145.71 : x
  2. Step 2: Convert to fraction form
    38,142.48/52,637.91 = 21,145.71/x
  3. Step 3: Cross multiply
    38,142.48x = 52,637.91 × 21,145.71
  4. Step 4: Simplify right side
    38,142.48x = 1,113,066,097.96
  5. Step 5: Solve for x
    x = 1,113,066,097.96/38,142.48
  6. Step 6: Final answer
    x = 29,181.79

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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.