Home / 12,285.12-18,390.96-7,526.29

Finding the Fourth Proportional to 12,285.12, 18,390.96 and 7,526.29

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Solution

The fourth proportional to 12,285.12, 18,390.96 and 7,526.29 is: 11,266.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.12 : 18,390.96 = 7,526.29 : x
  2. Step 2: Convert to fraction form
    12,285.12/18,390.96 = 7,526.29/x
  3. Step 3: Cross multiply
    12,285.12x = 18,390.96 × 7,526.29
  4. Step 4: Simplify right side
    12,285.12x = 138,415,698.34
  5. Step 5: Solve for x
    x = 138,415,698.34/12,285.12
  6. Step 6: Final answer
    x = 11,266.94

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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.