Home / 10,127.80-15,168.21-9,777.39

Finding the Fourth Proportional to 10,127.80, 15,168.21 and 9,777.39

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Solution

The fourth proportional to 10,127.80, 15,168.21 and 9,777.39 is: 14,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.80 : 15,168.21 = 9,777.39 : x
  2. Step 2: Convert to fraction form
    10,127.80/15,168.21 = 9,777.39/x
  3. Step 3: Cross multiply
    10,127.80x = 15,168.21 × 9,777.39
  4. Step 4: Simplify right side
    10,127.80x = 148,305,504.77
  5. Step 5: Solve for x
    x = 148,305,504.77/10,127.80
  6. Step 6: Final answer
    x = 14,643.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.