Home / 20,160.23-27,819.87-11,207.40

Finding the Fourth Proportional to 20,160.23, 27,819.87 and 11,207.40

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Solution

The fourth proportional to 20,160.23, 27,819.87 and 11,207.40 is: 15,465.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.23 : 27,819.87 = 11,207.40 : x
  2. Step 2: Convert to fraction form
    20,160.23/27,819.87 = 11,207.40/x
  3. Step 3: Cross multiply
    20,160.23x = 27,819.87 × 11,207.40
  4. Step 4: Simplify right side
    20,160.23x = 311,788,411.04
  5. Step 5: Solve for x
    x = 311,788,411.04/20,160.23
  6. Step 6: Final answer
    x = 15,465.52

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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.