Home / 12,071.88-16,660.80-7,036.20

Finding the Fourth Proportional to 12,071.88, 16,660.80 and 7,036.20

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Solution

The fourth proportional to 12,071.88, 16,660.80 and 7,036.20 is: 9,710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071.88 : 16,660.80 = 7,036.20 : x
  2. Step 2: Convert to fraction form
    12,071.88/16,660.80 = 7,036.20/x
  3. Step 3: Cross multiply
    12,071.88x = 16,660.80 × 7,036.20
  4. Step 4: Simplify right side
    12,071.88x = 117,228,720.96
  5. Step 5: Solve for x
    x = 117,228,720.96/12,071.88
  6. Step 6: Final answer
    x = 9,710.89

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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.