Home / 12,764.31-19,120.95-9,977.10

Finding the Fourth Proportional to 12,764.31, 19,120.95 and 9,977.10

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Solution

The fourth proportional to 12,764.31, 19,120.95 and 9,977.10 is: 14,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,764.31 : 19,120.95 = 9,977.10 : x
  2. Step 2: Convert to fraction form
    12,764.31/19,120.95 = 9,977.10/x
  3. Step 3: Cross multiply
    12,764.31x = 19,120.95 × 9,977.10
  4. Step 4: Simplify right side
    12,764.31x = 190,771,630.25
  5. Step 5: Solve for x
    x = 190,771,630.25/12,764.31
  6. Step 6: Final answer
    x = 14,945.71

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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.