Home / 21,905.19-30,218.63-14,348.25

Finding the Fourth Proportional to 21,905.19, 30,218.63 and 14,348.25

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Solution

The fourth proportional to 21,905.19, 30,218.63 and 14,348.25 is: 19,793.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.19 : 30,218.63 = 14,348.25 : x
  2. Step 2: Convert to fraction form
    21,905.19/30,218.63 = 14,348.25/x
  3. Step 3: Cross multiply
    21,905.19x = 30,218.63 × 14,348.25
  4. Step 4: Simplify right side
    21,905.19x = 433,584,386.16
  5. Step 5: Solve for x
    x = 433,584,386.16/21,905.19
  6. Step 6: Final answer
    x = 19,793.68

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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.