Home / 21,203.69-31,800.68-9,520.25

Finding the Fourth Proportional to 21,203.69, 31,800.68 and 9,520.25

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Solution

The fourth proportional to 21,203.69, 31,800.68 and 9,520.25 is: 14,278.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,203.69 : 31,800.68 = 9,520.25 : x
  2. Step 2: Convert to fraction form
    21,203.69/31,800.68 = 9,520.25/x
  3. Step 3: Cross multiply
    21,203.69x = 31,800.68 × 9,520.25
  4. Step 4: Simplify right side
    21,203.69x = 302,750,376.17
  5. Step 5: Solve for x
    x = 302,750,376.17/21,203.69
  6. Step 6: Final answer
    x = 14,278.19

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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.