Home / 21,509.36-32,212.12-12,936.15

Finding the Fourth Proportional to 21,509.36, 32,212.12 and 12,936.15

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Solution

The fourth proportional to 21,509.36, 32,212.12 and 12,936.15 is: 19,373.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,509.36 : 32,212.12 = 12,936.15 : x
  2. Step 2: Convert to fraction form
    21,509.36/32,212.12 = 12,936.15/x
  3. Step 3: Cross multiply
    21,509.36x = 32,212.12 × 12,936.15
  4. Step 4: Simplify right side
    21,509.36x = 416,700,816.14
  5. Step 5: Solve for x
    x = 416,700,816.14/21,509.36
  6. Step 6: Final answer
    x = 19,373.00

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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.