Home / 21,533.40-32,311.08-12,661.56

Finding the Fourth Proportional to 21,533.40, 32,311.08 and 12,661.56

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Solution

The fourth proportional to 21,533.40, 32,311.08 and 12,661.56 is: 18,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.40 : 32,311.08 = 12,661.56 : x
  2. Step 2: Convert to fraction form
    21,533.40/32,311.08 = 12,661.56/x
  3. Step 3: Cross multiply
    21,533.40x = 32,311.08 × 12,661.56
  4. Step 4: Simplify right side
    21,533.40x = 409,108,678.08
  5. Step 5: Solve for x
    x = 409,108,678.08/21,533.40
  6. Step 6: Final answer
    x = 18,998.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.