Home / 12,428.86-17,154.30-7,127.26

Finding the Fourth Proportional to 12,428.86, 17,154.30 and 7,127.26

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Solution

The fourth proportional to 12,428.86, 17,154.30 and 7,127.26 is: 9,837.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.86 : 17,154.30 = 7,127.26 : x
  2. Step 2: Convert to fraction form
    12,428.86/17,154.30 = 7,127.26/x
  3. Step 3: Cross multiply
    12,428.86x = 17,154.30 × 7,127.26
  4. Step 4: Simplify right side
    12,428.86x = 122,263,156.22
  5. Step 5: Solve for x
    x = 122,263,156.22/12,428.86
  6. Step 6: Final answer
    x = 9,837.04

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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.