Home / 21,458.10-32,190.88-7,225.23

Finding the Fourth Proportional to 21,458.10, 32,190.88 and 7,225.23

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Solution

The fourth proportional to 21,458.10, 32,190.88 and 7,225.23 is: 10,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458.10 : 32,190.88 = 7,225.23 : x
  2. Step 2: Convert to fraction form
    21,458.10/32,190.88 = 7,225.23/x
  3. Step 3: Cross multiply
    21,458.10x = 32,190.88 × 7,225.23
  4. Step 4: Simplify right side
    21,458.10x = 232,586,511.90
  5. Step 5: Solve for x
    x = 232,586,511.90/21,458.10
  6. Step 6: Final answer
    x = 10,839.10

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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.