Home / 20,723.95-28,599.04-11,292.51

Finding the Fourth Proportional to 20,723.95, 28,599.04 and 11,292.51

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Solution

The fourth proportional to 20,723.95, 28,599.04 and 11,292.51 is: 15,583.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.95 : 28,599.04 = 11,292.51 : x
  2. Step 2: Convert to fraction form
    20,723.95/28,599.04 = 11,292.51/x
  3. Step 3: Cross multiply
    20,723.95x = 28,599.04 × 11,292.51
  4. Step 4: Simplify right side
    20,723.95x = 322,954,945.19
  5. Step 5: Solve for x
    x = 322,954,945.19/20,723.95
  6. Step 6: Final answer
    x = 15,583.66

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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.