Home / 22,309.93-30,782.64-15,140.82

Finding the Fourth Proportional to 22,309.93, 30,782.64 and 15,140.82

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Solution

The fourth proportional to 22,309.93, 30,782.64 and 15,140.82 is: 20,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,309.93 : 30,782.64 = 15,140.82 : x
  2. Step 2: Convert to fraction form
    22,309.93/30,782.64 = 15,140.82/x
  3. Step 3: Cross multiply
    22,309.93x = 30,782.64 × 15,140.82
  4. Step 4: Simplify right side
    22,309.93x = 466,074,411.36
  5. Step 5: Solve for x
    x = 466,074,411.36/22,309.93
  6. Step 6: Final answer
    x = 20,890.90

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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.