Home / 38,857.51-58,271.98-13,890.78

Finding the Fourth Proportional to 38,857.51, 58,271.98 and 13,890.78

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Solution

The fourth proportional to 38,857.51, 58,271.98 and 13,890.78 is: 20,831.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,857.51 : 58,271.98 = 13,890.78 : x
  2. Step 2: Convert to fraction form
    38,857.51/58,271.98 = 13,890.78/x
  3. Step 3: Cross multiply
    38,857.51x = 58,271.98 × 13,890.78
  4. Step 4: Simplify right side
    38,857.51x = 809,442,962.98
  5. Step 5: Solve for x
    x = 809,442,962.98/38,857.51
  6. Step 6: Final answer
    x = 20,831.06

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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.