Home / 14,139.77-21,200.93-4,778.90

Finding the Fourth Proportional to 14,139.77, 21,200.93 and 4,778.90

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Solution

The fourth proportional to 14,139.77, 21,200.93 and 4,778.90 is: 7,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.77 : 21,200.93 = 4,778.90 : x
  2. Step 2: Convert to fraction form
    14,139.77/21,200.93 = 4,778.90/x
  3. Step 3: Cross multiply
    14,139.77x = 21,200.93 × 4,778.90
  4. Step 4: Simplify right side
    14,139.77x = 101,317,091.90
  5. Step 5: Solve for x
    x = 101,317,091.90/14,139.77
  6. Step 6: Final answer
    x = 7,165.40

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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.