Home / 10,127.30-13,992.80-7,289.06

Finding the Fourth Proportional to 10,127.30, 13,992.80 and 7,289.06

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Solution

The fourth proportional to 10,127.30, 13,992.80 and 7,289.06 is: 10,071.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.30 : 13,992.80 = 7,289.06 : x
  2. Step 2: Convert to fraction form
    10,127.30/13,992.80 = 7,289.06/x
  3. Step 3: Cross multiply
    10,127.30x = 13,992.80 × 7,289.06
  4. Step 4: Simplify right side
    10,127.30x = 101,994,252.36
  5. Step 5: Solve for x
    x = 101,994,252.36/10,127.30
  6. Step 6: Final answer
    x = 10,071.22

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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.