Home / 21,939.71-30,262.85-14,386.53

Finding the Fourth Proportional to 21,939.71, 30,262.85 and 14,386.53

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Solution

The fourth proportional to 21,939.71, 30,262.85 and 14,386.53 is: 19,844.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.71 : 30,262.85 = 14,386.53 : x
  2. Step 2: Convert to fraction form
    21,939.71/30,262.85 = 14,386.53/x
  3. Step 3: Cross multiply
    21,939.71x = 30,262.85 × 14,386.53
  4. Step 4: Simplify right side
    21,939.71x = 435,377,327.48
  5. Step 5: Solve for x
    x = 435,377,327.48/21,939.71
  6. Step 6: Final answer
    x = 19,844.27

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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.