Home / 15,688.75-21,650.44-9,401.13

Finding the Fourth Proportional to 15,688.75, 21,650.44 and 9,401.13

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Solution

The fourth proportional to 15,688.75, 21,650.44 and 9,401.13 is: 12,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.75 : 21,650.44 = 9,401.13 : x
  2. Step 2: Convert to fraction form
    15,688.75/21,650.44 = 9,401.13/x
  3. Step 3: Cross multiply
    15,688.75x = 21,650.44 × 9,401.13
  4. Step 4: Simplify right side
    15,688.75x = 203,538,601.00
  5. Step 5: Solve for x
    x = 203,538,601.00/15,688.75
  6. Step 6: Final answer
    x = 12,973.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.