Home / 21,485.84-29,650.68-11,925.90

Finding the Fourth Proportional to 21,485.84, 29,650.68 and 11,925.90

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Solution

The fourth proportional to 21,485.84, 29,650.68 and 11,925.90 is: 16,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.84 : 29,650.68 = 11,925.90 : x
  2. Step 2: Convert to fraction form
    21,485.84/29,650.68 = 11,925.90/x
  3. Step 3: Cross multiply
    21,485.84x = 29,650.68 × 11,925.90
  4. Step 4: Simplify right side
    21,485.84x = 353,611,044.61
  5. Step 5: Solve for x
    x = 353,611,044.61/21,485.84
  6. Step 6: Final answer
    x = 16,457.87

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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.