Home / 14,147.36-21,200.90-10,420.28

Finding the Fourth Proportional to 14,147.36, 21,200.90 and 10,420.28

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Solution

The fourth proportional to 14,147.36, 21,200.90 and 10,420.28 is: 15,615.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.36 : 21,200.90 = 10,420.28 : x
  2. Step 2: Convert to fraction form
    14,147.36/21,200.90 = 10,420.28/x
  3. Step 3: Cross multiply
    14,147.36x = 21,200.90 × 10,420.28
  4. Step 4: Simplify right side
    14,147.36x = 220,919,156.15
  5. Step 5: Solve for x
    x = 220,919,156.15/14,147.36
  6. Step 6: Final answer
    x = 15,615.58

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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.