Home / 14,091.36-21,140.72-4,230.40

Finding the Fourth Proportional to 14,091.36, 21,140.72 and 4,230.40

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Solution

The fourth proportional to 14,091.36, 21,140.72 and 4,230.40 is: 6,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,091.36 : 21,140.72 = 4,230.40 : x
  2. Step 2: Convert to fraction form
    14,091.36/21,140.72 = 4,230.40/x
  3. Step 3: Cross multiply
    14,091.36x = 21,140.72 × 4,230.40
  4. Step 4: Simplify right side
    14,091.36x = 89,433,701.89
  5. Step 5: Solve for x
    x = 89,433,701.89/14,091.36
  6. Step 6: Final answer
    x = 6,346.70

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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.