Home / 21,320.17-31,981.79-6,527.16

Finding the Fourth Proportional to 21,320.17, 31,981.79 and 6,527.16

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Solution

The fourth proportional to 21,320.17, 31,981.79 and 6,527.16 is: 9,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.17 : 31,981.79 = 6,527.16 : x
  2. Step 2: Convert to fraction form
    21,320.17/31,981.79 = 6,527.16/x
  3. Step 3: Cross multiply
    21,320.17x = 31,981.79 × 6,527.16
  4. Step 4: Simplify right side
    21,320.17x = 208,750,227.78
  5. Step 5: Solve for x
    x = 208,750,227.78/21,320.17
  6. Step 6: Final answer
    x = 9,791.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.