Home / 20,205.05-27,881.08-11,707.50

Finding the Fourth Proportional to 20,205.05, 27,881.08 and 11,707.50

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Solution

The fourth proportional to 20,205.05, 27,881.08 and 11,707.50 is: 16,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.05 : 27,881.08 = 11,707.50 : x
  2. Step 2: Convert to fraction form
    20,205.05/27,881.08 = 11,707.50/x
  3. Step 3: Cross multiply
    20,205.05x = 27,881.08 × 11,707.50
  4. Step 4: Simplify right side
    20,205.05x = 326,417,744.10
  5. Step 5: Solve for x
    x = 326,417,744.10/20,205.05
  6. Step 6: Final answer
    x = 16,155.26

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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.