Home / 21,887.29-30,203.22-12,935.63

Finding the Fourth Proportional to 21,887.29, 30,203.22 and 12,935.63

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Solution

The fourth proportional to 21,887.29, 30,203.22 and 12,935.63 is: 17,850.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.29 : 30,203.22 = 12,935.63 : x
  2. Step 2: Convert to fraction form
    21,887.29/30,203.22 = 12,935.63/x
  3. Step 3: Cross multiply
    21,887.29x = 30,203.22 × 12,935.63
  4. Step 4: Simplify right side
    21,887.29x = 390,697,527.71
  5. Step 5: Solve for x
    x = 390,697,527.71/21,887.29
  6. Step 6: Final answer
    x = 17,850.43

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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.