Home / 15,903.10-21,944.65-9,190.90

Finding the Fourth Proportional to 15,903.10, 21,944.65 and 9,190.90

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Solution

The fourth proportional to 15,903.10, 21,944.65 and 9,190.90 is: 12,682.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.10 : 21,944.65 = 9,190.90 : x
  2. Step 2: Convert to fraction form
    15,903.10/21,944.65 = 9,190.90/x
  3. Step 3: Cross multiply
    15,903.10x = 21,944.65 × 9,190.90
  4. Step 4: Simplify right side
    15,903.10x = 201,690,928.01
  5. Step 5: Solve for x
    x = 201,690,928.01/15,903.10
  6. Step 6: Final answer
    x = 12,682.50

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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.