Home / 15,060.14-20,780.34-8,685.36

Finding the Fourth Proportional to 15,060.14, 20,780.34 and 8,685.36

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Solution

The fourth proportional to 15,060.14, 20,780.34 and 8,685.36 is: 11,984.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,060.14 : 20,780.34 = 8,685.36 : x
  2. Step 2: Convert to fraction form
    15,060.14/20,780.34 = 8,685.36/x
  3. Step 3: Cross multiply
    15,060.14x = 20,780.34 × 8,685.36
  4. Step 4: Simplify right side
    15,060.14x = 180,484,733.82
  5. Step 5: Solve for x
    x = 180,484,733.82/15,060.14
  6. Step 6: Final answer
    x = 11,984.27

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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.