Home / 21,053.04-31,556.88-10,665.60

Finding the Fourth Proportional to 21,053.04, 31,556.88 and 10,665.60

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Solution

The fourth proportional to 21,053.04, 31,556.88 and 10,665.60 is: 15,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.04 : 31,556.88 = 10,665.60 : x
  2. Step 2: Convert to fraction form
    21,053.04/31,556.88 = 10,665.60/x
  3. Step 3: Cross multiply
    21,053.04x = 31,556.88 × 10,665.60
  4. Step 4: Simplify right side
    21,053.04x = 336,573,059.33
  5. Step 5: Solve for x
    x = 336,573,059.33/21,053.04
  6. Step 6: Final answer
    x = 15,986.91

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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.