Home / 21,935.74-30,271.21-11,864.17

Finding the Fourth Proportional to 21,935.74, 30,271.21 and 11,864.17

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Solution

The fourth proportional to 21,935.74, 30,271.21 and 11,864.17 is: 16,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.74 : 30,271.21 = 11,864.17 : x
  2. Step 2: Convert to fraction form
    21,935.74/30,271.21 = 11,864.17/x
  3. Step 3: Cross multiply
    21,935.74x = 30,271.21 × 11,864.17
  4. Step 4: Simplify right side
    21,935.74x = 359,142,751.89
  5. Step 5: Solve for x
    x = 359,142,751.89/21,935.74
  6. Step 6: Final answer
    x = 16,372.49

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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.