Home / 20,270.86-27,973.52-11,318.51

Finding the Fourth Proportional to 20,270.86, 27,973.52 and 11,318.51

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Solution

The fourth proportional to 20,270.86, 27,973.52 and 11,318.51 is: 15,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.86 : 27,973.52 = 11,318.51 : x
  2. Step 2: Convert to fraction form
    20,270.86/27,973.52 = 11,318.51/x
  3. Step 3: Cross multiply
    20,270.86x = 27,973.52 × 11,318.51
  4. Step 4: Simplify right side
    20,270.86x = 316,618,509.26
  5. Step 5: Solve for x
    x = 316,618,509.26/20,270.86
  6. Step 6: Final answer
    x = 15,619.40

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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.