Home / 12,980.00-17,912.40-7,011.66

Finding the Fourth Proportional to 12,980.00, 17,912.40 and 7,011.66

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Solution

The fourth proportional to 12,980.00, 17,912.40 and 7,011.66 is: 9,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980.00 : 17,912.40 = 7,011.66 : x
  2. Step 2: Convert to fraction form
    12,980.00/17,912.40 = 7,011.66/x
  3. Step 3: Cross multiply
    12,980.00x = 17,912.40 × 7,011.66
  4. Step 4: Simplify right side
    12,980.00x = 125,595,748.76
  5. Step 5: Solve for x
    x = 125,595,748.76/12,980.00
  6. Step 6: Final answer
    x = 9,676.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.