Home / 12,421.07-17,141.11-7,115.93

Finding the Fourth Proportional to 12,421.07, 17,141.11 and 7,115.93

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Solution

The fourth proportional to 12,421.07, 17,141.11 and 7,115.93 is: 9,820.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.07 : 17,141.11 = 7,115.93 : x
  2. Step 2: Convert to fraction form
    12,421.07/17,141.11 = 7,115.93/x
  3. Step 3: Cross multiply
    12,421.07x = 17,141.11 × 7,115.93
  4. Step 4: Simplify right side
    12,421.07x = 121,974,938.88
  5. Step 5: Solve for x
    x = 121,974,938.88/12,421.07
  6. Step 6: Final answer
    x = 9,820.00

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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.