Home / 12,620.88-17,416.56-7,315.56

Finding the Fourth Proportional to 12,620.88, 17,416.56 and 7,315.56

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Solution

The fourth proportional to 12,620.88, 17,416.56 and 7,315.56 is: 10,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.88 : 17,416.56 = 7,315.56 : x
  2. Step 2: Convert to fraction form
    12,620.88/17,416.56 = 7,315.56/x
  3. Step 3: Cross multiply
    12,620.88x = 17,416.56 × 7,315.56
  4. Step 4: Simplify right side
    12,620.88x = 127,411,889.67
  5. Step 5: Solve for x
    x = 127,411,889.67/12,620.88
  6. Step 6: Final answer
    x = 10,095.33

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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.