Home / 21,143.10-31,712.12-5,561.94

Finding the Fourth Proportional to 21,143.10, 31,712.12 and 5,561.94

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Solution

The fourth proportional to 21,143.10, 31,712.12 and 5,561.94 is: 8,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.10 : 31,712.12 = 5,561.94 : x
  2. Step 2: Convert to fraction form
    21,143.10/31,712.12 = 5,561.94/x
  3. Step 3: Cross multiply
    21,143.10x = 31,712.12 × 5,561.94
  4. Step 4: Simplify right side
    21,143.10x = 176,380,908.71
  5. Step 5: Solve for x
    x = 176,380,908.71/21,143.10
  6. Step 6: Final answer
    x = 8,342.24

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1.5x scale

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.