Home / 38,988.64-58,469.16-12,688.48

Finding the Fourth Proportional to 38,988.64, 58,469.16 and 12,688.48

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Solution

The fourth proportional to 38,988.64, 58,469.16 and 12,688.48 is: 19,028.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988.64 : 58,469.16 = 12,688.48 : x
  2. Step 2: Convert to fraction form
    38,988.64/58,469.16 = 12,688.48/x
  3. Step 3: Cross multiply
    38,988.64x = 58,469.16 × 12,688.48
  4. Step 4: Simplify right side
    38,988.64x = 741,884,767.28
  5. Step 5: Solve for x
    x = 741,884,767.28/38,988.64
  6. Step 6: Final answer
    x = 19,028.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.