Home / 21,053.68-31,611.60-14,077.20

Finding the Fourth Proportional to 21,053.68, 31,611.60 and 14,077.20

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Solution

The fourth proportional to 21,053.68, 31,611.60 and 14,077.20 is: 21,136.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.68 : 31,611.60 = 14,077.20 : x
  2. Step 2: Convert to fraction form
    21,053.68/31,611.60 = 14,077.20/x
  3. Step 3: Cross multiply
    21,053.68x = 31,611.60 × 14,077.20
  4. Step 4: Simplify right side
    21,053.68x = 445,002,815.52
  5. Step 5: Solve for x
    x = 445,002,815.52/21,053.68
  6. Step 6: Final answer
    x = 21,136.58

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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.