Home / 10,768.12-14,868.30-8,681.56

Finding the Fourth Proportional to 10,768.12, 14,868.30 and 8,681.56

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Solution

The fourth proportional to 10,768.12, 14,868.30 and 8,681.56 is: 11,987.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,768.12 : 14,868.30 = 8,681.56 : x
  2. Step 2: Convert to fraction form
    10,768.12/14,868.30 = 8,681.56/x
  3. Step 3: Cross multiply
    10,768.12x = 14,868.30 × 8,681.56
  4. Step 4: Simplify right side
    10,768.12x = 129,080,038.55
  5. Step 5: Solve for x
    x = 129,080,038.55/10,768.12
  6. Step 6: Final answer
    x = 11,987.24

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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.