Home / 21,328.58-31,996.10-7,285.30

Finding the Fourth Proportional to 21,328.58, 31,996.10 and 7,285.30

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Solution

The fourth proportional to 21,328.58, 31,996.10 and 7,285.30 is: 10,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,328.58 : 31,996.10 = 7,285.30 : x
  2. Step 2: Convert to fraction form
    21,328.58/31,996.10 = 7,285.30/x
  3. Step 3: Cross multiply
    21,328.58x = 31,996.10 × 7,285.30
  4. Step 4: Simplify right side
    21,328.58x = 233,101,125.55
  5. Step 5: Solve for x
    x = 233,101,125.55/21,328.58
  6. Step 6: Final answer
    x = 10,929.05

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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.