Home / 14,130.48-21,190.64-4,267.20

Finding the Fourth Proportional to 14,130.48, 21,190.64 and 4,267.20

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Solution

The fourth proportional to 14,130.48, 21,190.64 and 4,267.20 is: 6,399.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.48 : 21,190.64 = 4,267.20 : x
  2. Step 2: Convert to fraction form
    14,130.48/21,190.64 = 4,267.20/x
  3. Step 3: Cross multiply
    14,130.48x = 21,190.64 × 4,267.20
  4. Step 4: Simplify right side
    14,130.48x = 90,424,699.01
  5. Step 5: Solve for x
    x = 90,424,699.01/14,130.48
  6. Step 6: Final answer
    x = 6,399.27

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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.