Home / 21,459.22-32,153.74-20,639.10

Finding the Fourth Proportional to 21,459.22, 32,153.74 and 20,639.10

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Solution

The fourth proportional to 21,459.22, 32,153.74 and 20,639.10 is: 30,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.22 : 32,153.74 = 20,639.10 : x
  2. Step 2: Convert to fraction form
    21,459.22/32,153.74 = 20,639.10/x
  3. Step 3: Cross multiply
    21,459.22x = 32,153.74 × 20,639.10
  4. Step 4: Simplify right side
    21,459.22x = 663,624,255.23
  5. Step 5: Solve for x
    x = 663,624,255.23/21,459.22
  6. Step 6: Final answer
    x = 30,924.90

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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.