Home / 13,127.04-18,108.48-7,812.48

Finding the Fourth Proportional to 13,127.04, 18,108.48 and 7,812.48

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Solution

The fourth proportional to 13,127.04, 18,108.48 and 7,812.48 is: 10,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.04 : 18,108.48 = 7,812.48 : x
  2. Step 2: Convert to fraction form
    13,127.04/18,108.48 = 7,812.48/x
  3. Step 3: Cross multiply
    13,127.04x = 18,108.48 × 7,812.48
  4. Step 4: Simplify right side
    13,127.04x = 141,472,137.83
  5. Step 5: Solve for x
    x = 141,472,137.83/13,127.04
  6. Step 6: Final answer
    x = 10,777.15

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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.