Home / 15,909.31-21,953.57-9,195.37

Finding the Fourth Proportional to 15,909.31, 21,953.57 and 9,195.37

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Solution

The fourth proportional to 15,909.31, 21,953.57 and 9,195.37 is: 12,688.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.31 : 21,953.57 = 9,195.37 : x
  2. Step 2: Convert to fraction form
    15,909.31/21,953.57 = 9,195.37/x
  3. Step 3: Cross multiply
    15,909.31x = 21,953.57 × 9,195.37
  4. Step 4: Simplify right side
    15,909.31x = 201,871,221.60
  5. Step 5: Solve for x
    x = 201,871,221.60/15,909.31
  6. Step 6: Final answer
    x = 12,688.87

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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.