Home / 20,762.71-31,076.33-15,805.00

Finding the Fourth Proportional to 20,762.71, 31,076.33 and 15,805.00

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Solution

The fourth proportional to 20,762.71, 31,076.33 and 15,805.00 is: 23,655.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.71 : 31,076.33 = 15,805.00 : x
  2. Step 2: Convert to fraction form
    20,762.71/31,076.33 = 15,805.00/x
  3. Step 3: Cross multiply
    20,762.71x = 31,076.33 × 15,805.00
  4. Step 4: Simplify right side
    20,762.71x = 491,161,355.47
  5. Step 5: Solve for x
    x = 491,161,355.47/20,762.71
  6. Step 6: Final answer
    x = 23,655.94

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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.