Home / 21,749.39-30,013.65-12,674.17

Finding the Fourth Proportional to 21,749.39, 30,013.65 and 12,674.17

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Solution

The fourth proportional to 21,749.39, 30,013.65 and 12,674.17 is: 17,490.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.39 : 30,013.65 = 12,674.17 : x
  2. Step 2: Convert to fraction form
    21,749.39/30,013.65 = 12,674.17/x
  3. Step 3: Cross multiply
    21,749.39x = 30,013.65 × 12,674.17
  4. Step 4: Simplify right side
    21,749.39x = 380,398,102.42
  5. Step 5: Solve for x
    x = 380,398,102.42/21,749.39
  6. Step 6: Final answer
    x = 17,490.06

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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.