Home / 20,369.02-28,109.01-11,416.51

Finding the Fourth Proportional to 20,369.02, 28,109.01 and 11,416.51

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Solution

The fourth proportional to 20,369.02, 28,109.01 and 11,416.51 is: 15,754.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.02 : 28,109.01 = 11,416.51 : x
  2. Step 2: Convert to fraction form
    20,369.02/28,109.01 = 11,416.51/x
  3. Step 3: Cross multiply
    20,369.02x = 28,109.01 × 11,416.51
  4. Step 4: Simplify right side
    20,369.02x = 320,906,793.76
  5. Step 5: Solve for x
    x = 320,906,793.76/20,369.02
  6. Step 6: Final answer
    x = 15,754.65

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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.