Home / 21,360.38-29,477.93-11,929.55

Finding the Fourth Proportional to 21,360.38, 29,477.93 and 11,929.55

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Solution

The fourth proportional to 21,360.38, 29,477.93 and 11,929.55 is: 16,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.38 : 29,477.93 = 11,929.55 : x
  2. Step 2: Convert to fraction form
    21,360.38/29,477.93 = 11,929.55/x
  3. Step 3: Cross multiply
    21,360.38x = 29,477.93 × 11,929.55
  4. Step 4: Simplify right side
    21,360.38x = 351,658,232.79
  5. Step 5: Solve for x
    x = 351,658,232.79/21,360.38
  6. Step 6: Final answer
    x = 16,463.11

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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.