Home / 21,000.58-31,428.22-17,208.53

Finding the Fourth Proportional to 21,000.58, 31,428.22 and 17,208.53

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Solution

The fourth proportional to 21,000.58, 31,428.22 and 17,208.53 is: 25,753.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.58 : 31,428.22 = 17,208.53 : x
  2. Step 2: Convert to fraction form
    21,000.58/31,428.22 = 17,208.53/x
  3. Step 3: Cross multiply
    21,000.58x = 31,428.22 × 17,208.53
  4. Step 4: Simplify right side
    21,000.58x = 540,833,355.13
  5. Step 5: Solve for x
    x = 540,833,355.13/21,000.58
  6. Step 6: Final answer
    x = 25,753.26

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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.