Home / 21,376.32-29,498.46-12,423.38

Finding the Fourth Proportional to 21,376.32, 29,498.46 and 12,423.38

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Solution

The fourth proportional to 21,376.32, 29,498.46 and 12,423.38 is: 17,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.32 : 29,498.46 = 12,423.38 : x
  2. Step 2: Convert to fraction form
    21,376.32/29,498.46 = 12,423.38/x
  3. Step 3: Cross multiply
    21,376.32x = 29,498.46 × 12,423.38
  4. Step 4: Simplify right side
    21,376.32x = 366,470,577.99
  5. Step 5: Solve for x
    x = 366,470,577.99/21,376.32
  6. Step 6: Final answer
    x = 17,143.76

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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.