Home / 10,128.96-15,153.48-7,670.88

Finding the Fourth Proportional to 10,128.96, 15,153.48 and 7,670.88

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Solution

The fourth proportional to 10,128.96, 15,153.48 and 7,670.88 is: 11,476.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.96 : 15,153.48 = 7,670.88 : x
  2. Step 2: Convert to fraction form
    10,128.96/15,153.48 = 7,670.88/x
  3. Step 3: Cross multiply
    10,128.96x = 15,153.48 × 7,670.88
  4. Step 4: Simplify right side
    10,128.96x = 116,240,526.66
  5. Step 5: Solve for x
    x = 116,240,526.66/10,128.96
  6. Step 6: Final answer
    x = 11,476.06

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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.