Home / 21,013.02-31,519.53-14,419.22

Finding the Fourth Proportional to 21,013.02, 31,519.53 and 14,419.22

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Solution

The fourth proportional to 21,013.02, 31,519.53 and 14,419.22 is: 21,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.02 : 31,519.53 = 14,419.22 : x
  2. Step 2: Convert to fraction form
    21,013.02/31,519.53 = 14,419.22/x
  3. Step 3: Cross multiply
    21,013.02x = 31,519.53 × 14,419.22
  4. Step 4: Simplify right side
    21,013.02x = 454,486,879.77
  5. Step 5: Solve for x
    x = 454,486,879.77/21,013.02
  6. Step 6: Final answer
    x = 21,628.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.