Home / 21,340.92-29,455.76-12,964.44

Finding the Fourth Proportional to 21,340.92, 29,455.76 and 12,964.44

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Solution

The fourth proportional to 21,340.92, 29,455.76 and 12,964.44 is: 17,894.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.92 : 29,455.76 = 12,964.44 : x
  2. Step 2: Convert to fraction form
    21,340.92/29,455.76 = 12,964.44/x
  3. Step 3: Cross multiply
    21,340.92x = 29,455.76 × 12,964.44
  4. Step 4: Simplify right side
    21,340.92x = 381,877,368.35
  5. Step 5: Solve for x
    x = 381,877,368.35/21,340.92
  6. Step 6: Final answer
    x = 17,894.14

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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.