Home / 20,834.77-28,750.87-11,401.51

Finding the Fourth Proportional to 20,834.77, 28,750.87 and 11,401.51

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Solution

The fourth proportional to 20,834.77, 28,750.87 and 11,401.51 is: 15,733.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.77 : 28,750.87 = 11,401.51 : x
  2. Step 2: Convert to fraction form
    20,834.77/28,750.87 = 11,401.51/x
  3. Step 3: Cross multiply
    20,834.77x = 28,750.87 × 11,401.51
  4. Step 4: Simplify right side
    20,834.77x = 327,803,331.81
  5. Step 5: Solve for x
    x = 327,803,331.81/20,834.77
  6. Step 6: Final answer
    x = 15,733.47

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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.