Home / 21,495.21-29,666.35-12,064.38

Finding the Fourth Proportional to 21,495.21, 29,666.35 and 12,064.38

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Solution

The fourth proportional to 21,495.21, 29,666.35 and 12,064.38 is: 16,650.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.21 : 29,666.35 = 12,064.38 : x
  2. Step 2: Convert to fraction form
    21,495.21/29,666.35 = 12,064.38/x
  3. Step 3: Cross multiply
    21,495.21x = 29,666.35 × 12,064.38
  4. Step 4: Simplify right side
    21,495.21x = 357,906,119.61
  5. Step 5: Solve for x
    x = 357,906,119.61/21,495.21
  6. Step 6: Final answer
    x = 16,650.51

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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.