Home / 20,646.06-30,980.78-8,798.58

Finding the Fourth Proportional to 20,646.06, 30,980.78 and 8,798.58

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Solution

The fourth proportional to 20,646.06, 30,980.78 and 8,798.58 is: 13,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.06 : 30,980.78 = 8,798.58 : x
  2. Step 2: Convert to fraction form
    20,646.06/30,980.78 = 8,798.58/x
  3. Step 3: Cross multiply
    20,646.06x = 30,980.78 × 8,798.58
  4. Step 4: Simplify right side
    20,646.06x = 272,586,871.29
  5. Step 5: Solve for x
    x = 272,586,871.29/20,646.06
  6. Step 6: Final answer
    x = 13,202.85

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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.