Home / 20,740.14-28,621.35-11,308.74

Finding the Fourth Proportional to 20,740.14, 28,621.35 and 11,308.74

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Solution

The fourth proportional to 20,740.14, 28,621.35 and 11,308.74 is: 15,606.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.14 : 28,621.35 = 11,308.74 : x
  2. Step 2: Convert to fraction form
    20,740.14/28,621.35 = 11,308.74/x
  3. Step 3: Cross multiply
    20,740.14x = 28,621.35 × 11,308.74
  4. Step 4: Simplify right side
    20,740.14x = 323,671,405.60
  5. Step 5: Solve for x
    x = 323,671,405.60/20,740.14
  6. Step 6: Final answer
    x = 15,606.04

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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.