Home / 20,962.80-31,395.60-14,353.20

Finding the Fourth Proportional to 20,962.80, 31,395.60 and 14,353.20

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Solution

The fourth proportional to 20,962.80, 31,395.60 and 14,353.20 is: 21,496.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.80 : 31,395.60 = 14,353.20 : x
  2. Step 2: Convert to fraction form
    20,962.80/31,395.60 = 14,353.20/x
  3. Step 3: Cross multiply
    20,962.80x = 31,395.60 × 14,353.20
  4. Step 4: Simplify right side
    20,962.80x = 450,627,325.92
  5. Step 5: Solve for x
    x = 450,627,325.92/20,962.80
  6. Step 6: Final answer
    x = 21,496.52

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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.