Home / 21,351.16-29,461.02-11,919.76

Finding the Fourth Proportional to 21,351.16, 29,461.02 and 11,919.76

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Solution

The fourth proportional to 21,351.16, 29,461.02 and 11,919.76 is: 16,447.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,351.16 : 29,461.02 = 11,919.76 : x
  2. Step 2: Convert to fraction form
    21,351.16/29,461.02 = 11,919.76/x
  3. Step 3: Cross multiply
    21,351.16x = 29,461.02 × 11,919.76
  4. Step 4: Simplify right side
    21,351.16x = 351,168,287.76
  5. Step 5: Solve for x
    x = 351,168,287.76/21,351.16
  6. Step 6: Final answer
    x = 16,447.27

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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.