Home / 21,362.72-29,477.04-11,929.76

Finding the Fourth Proportional to 21,362.72, 29,477.04 and 11,929.76

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Solution

The fourth proportional to 21,362.72, 29,477.04 and 11,929.76 is: 16,461.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.72 : 29,477.04 = 11,929.76 : x
  2. Step 2: Convert to fraction form
    21,362.72/29,477.04 = 11,929.76/x
  3. Step 3: Cross multiply
    21,362.72x = 29,477.04 × 11,929.76
  4. Step 4: Simplify right side
    21,362.72x = 351,654,012.71
  5. Step 5: Solve for x
    x = 351,654,012.71/21,362.72
  6. Step 6: Final answer
    x = 16,461.11

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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.