Home / 21,360.06-29,477.32-11,928.62

Finding the Fourth Proportional to 21,360.06, 29,477.32 and 11,928.62

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Solution

The fourth proportional to 21,360.06, 29,477.32 and 11,928.62 is: 16,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.06 : 29,477.32 = 11,928.62 : x
  2. Step 2: Convert to fraction form
    21,360.06/29,477.32 = 11,928.62/x
  3. Step 3: Cross multiply
    21,360.06x = 29,477.32 × 11,928.62
  4. Step 4: Simplify right side
    21,360.06x = 351,623,748.90
  5. Step 5: Solve for x
    x = 351,623,748.90/21,360.06
  6. Step 6: Final answer
    x = 16,461.74

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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.