Home / 14,140.05-21,210.38-4,279.31

Finding the Fourth Proportional to 14,140.05, 21,210.38 and 4,279.31

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Solution

The fourth proportional to 14,140.05, 21,210.38 and 4,279.31 is: 6,419.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.05 : 21,210.38 = 4,279.31 : x
  2. Step 2: Convert to fraction form
    14,140.05/21,210.38 = 4,279.31/x
  3. Step 3: Cross multiply
    14,140.05x = 21,210.38 × 4,279.31
  4. Step 4: Simplify right side
    14,140.05x = 90,765,769.84
  5. Step 5: Solve for x
    x = 90,765,769.84/14,140.05
  6. Step 6: Final answer
    x = 6,419.06

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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.