Home / 12,430.98-17,154.25-7,122.11

Finding the Fourth Proportional to 12,430.98, 17,154.25 and 7,122.11

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Solution

The fourth proportional to 12,430.98, 17,154.25 and 7,122.11 is: 9,828.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.98 : 17,154.25 = 7,122.11 : x
  2. Step 2: Convert to fraction form
    12,430.98/17,154.25 = 7,122.11/x
  3. Step 3: Cross multiply
    12,430.98x = 17,154.25 × 7,122.11
  4. Step 4: Simplify right side
    12,430.98x = 122,174,351.89
  5. Step 5: Solve for x
    x = 122,174,351.89/12,430.98
  6. Step 6: Final answer
    x = 9,828.22

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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.