Home / 12,588.10-18,882.15-7,404.10

Finding the Fourth Proportional to 12,588.10, 18,882.15 and 7,404.10

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Solution

The fourth proportional to 12,588.10, 18,882.15 and 7,404.10 is: 11,106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.10 : 18,882.15 = 7,404.10 : x
  2. Step 2: Convert to fraction form
    12,588.10/18,882.15 = 7,404.10/x
  3. Step 3: Cross multiply
    12,588.10x = 18,882.15 × 7,404.10
  4. Step 4: Simplify right side
    12,588.10x = 139,805,326.82
  5. Step 5: Solve for x
    x = 139,805,326.82/12,588.10
  6. Step 6: Final answer
    x = 11,106.15

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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.