Home / 21,113.46-31,665.51-6,320.43

Finding the Fourth Proportional to 21,113.46, 31,665.51 and 6,320.43

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Solution

The fourth proportional to 21,113.46, 31,665.51 and 6,320.43 is: 9,479.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.46 : 31,665.51 = 6,320.43 : x
  2. Step 2: Convert to fraction form
    21,113.46/31,665.51 = 6,320.43/x
  3. Step 3: Cross multiply
    21,113.46x = 31,665.51 × 6,320.43
  4. Step 4: Simplify right side
    21,113.46x = 200,139,639.37
  5. Step 5: Solve for x
    x = 200,139,639.37/21,113.46
  6. Step 6: Final answer
    x = 9,479.24

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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.