Home / 21,918.60-32,856.30-10,816.20

Finding the Fourth Proportional to 21,918.60, 32,856.30 and 10,816.20

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Solution

The fourth proportional to 21,918.60, 32,856.30 and 10,816.20 is: 16,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.60 : 32,856.30 = 10,816.20 : x
  2. Step 2: Convert to fraction form
    21,918.60/32,856.30 = 10,816.20/x
  3. Step 3: Cross multiply
    21,918.60x = 32,856.30 × 10,816.20
  4. Step 4: Simplify right side
    21,918.60x = 355,380,312.06
  5. Step 5: Solve for x
    x = 355,380,312.06/21,918.60
  6. Step 6: Final answer
    x = 16,213.64

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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.