Home / 21,970.46-30,318.86-11,898.82

Finding the Fourth Proportional to 21,970.46, 30,318.86 and 11,898.82

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Solution

The fourth proportional to 21,970.46, 30,318.86 and 11,898.82 is: 16,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.46 : 30,318.86 = 11,898.82 : x
  2. Step 2: Convert to fraction form
    21,970.46/30,318.86 = 11,898.82/x
  3. Step 3: Cross multiply
    21,970.46x = 30,318.86 × 11,898.82
  4. Step 4: Simplify right side
    21,970.46x = 360,758,446.66
  5. Step 5: Solve for x
    x = 360,758,446.66/21,970.46
  6. Step 6: Final answer
    x = 16,420.16

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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.