Home / 21,829.40-32,792.70-20,943.80

Finding the Fourth Proportional to 21,829.40, 32,792.70 and 20,943.80

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Solution

The fourth proportional to 21,829.40, 32,792.70 and 20,943.80 is: 31,462.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.40 : 32,792.70 = 20,943.80 : x
  2. Step 2: Convert to fraction form
    21,829.40/32,792.70 = 20,943.80/x
  3. Step 3: Cross multiply
    21,829.40x = 32,792.70 × 20,943.80
  4. Step 4: Simplify right side
    21,829.40x = 686,803,750.26
  5. Step 5: Solve for x
    x = 686,803,750.26/21,829.40
  6. Step 6: Final answer
    x = 31,462.33

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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.