Home / 21,511.37-32,263.81-7,280.21

Finding the Fourth Proportional to 21,511.37, 32,263.81 and 7,280.21

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Solution

The fourth proportional to 21,511.37, 32,263.81 and 7,280.21 is: 10,919.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,511.37 : 32,263.81 = 7,280.21 : x
  2. Step 2: Convert to fraction form
    21,511.37/32,263.81 = 7,280.21/x
  3. Step 3: Cross multiply
    21,511.37x = 32,263.81 × 7,280.21
  4. Step 4: Simplify right side
    21,511.37x = 234,887,312.20
  5. Step 5: Solve for x
    x = 234,887,312.20/21,511.37
  6. Step 6: Final answer
    x = 10,919.22

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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.