Home / 21,130.80-31,644.36-14,184.24

Finding the Fourth Proportional to 21,130.80, 31,644.36 and 14,184.24

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Solution

The fourth proportional to 21,130.80, 31,644.36 and 14,184.24 is: 21,241.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.80 : 31,644.36 = 14,184.24 : x
  2. Step 2: Convert to fraction form
    21,130.80/31,644.36 = 14,184.24/x
  3. Step 3: Cross multiply
    21,130.80x = 31,644.36 × 14,184.24
  4. Step 4: Simplify right side
    21,130.80x = 448,851,196.89
  5. Step 5: Solve for x
    x = 448,851,196.89/21,130.80
  6. Step 6: Final answer
    x = 21,241.56

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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.