Home / 21,150.88-31,705.20-14,136.80

Finding the Fourth Proportional to 21,150.88, 31,705.20 and 14,136.80

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Solution

The fourth proportional to 21,150.88, 31,705.20 and 14,136.80 is: 21,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.88 : 31,705.20 = 14,136.80 : x
  2. Step 2: Convert to fraction form
    21,150.88/31,705.20 = 14,136.80/x
  3. Step 3: Cross multiply
    21,150.88x = 31,705.20 × 14,136.80
  4. Step 4: Simplify right side
    21,150.88x = 448,210,071.36
  5. Step 5: Solve for x
    x = 448,210,071.36/21,150.88
  6. Step 6: Final answer
    x = 21,191.08

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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.