Home / 12,977.10-19,458.45-5,177.10

Finding the Fourth Proportional to 12,977.10, 19,458.45 and 5,177.10

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Solution

The fourth proportional to 12,977.10, 19,458.45 and 5,177.10 is: 7,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.10 : 19,458.45 = 5,177.10 : x
  2. Step 2: Convert to fraction form
    12,977.10/19,458.45 = 5,177.10/x
  3. Step 3: Cross multiply
    12,977.10x = 19,458.45 × 5,177.10
  4. Step 4: Simplify right side
    12,977.10x = 100,738,341.50
  5. Step 5: Solve for x
    x = 100,738,341.50/12,977.10
  6. Step 6: Final answer
    x = 7,762.78

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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.