Home / 28,914.40-43,298.70-21,478.60

Finding the Fourth Proportional to 28,914.40, 43,298.70 and 21,478.60

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Solution

The fourth proportional to 28,914.40, 43,298.70 and 21,478.60 is: 32,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.40 : 43,298.70 = 21,478.60 : x
  2. Step 2: Convert to fraction form
    28,914.40/43,298.70 = 21,478.60/x
  3. Step 3: Cross multiply
    28,914.40x = 43,298.70 × 21,478.60
  4. Step 4: Simplify right side
    28,914.40x = 929,995,457.82
  5. Step 5: Solve for x
    x = 929,995,457.82/28,914.40
  6. Step 6: Final answer
    x = 32,163.75

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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.