Home / 15,729.60-21,707.22-9,356.94

Finding the Fourth Proportional to 15,729.60, 21,707.22 and 9,356.94

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Solution

The fourth proportional to 15,729.60, 21,707.22 and 9,356.94 is: 12,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.60 : 21,707.22 = 9,356.94 : x
  2. Step 2: Convert to fraction form
    15,729.60/21,707.22 = 9,356.94/x
  3. Step 3: Cross multiply
    15,729.60x = 21,707.22 × 9,356.94
  4. Step 4: Simplify right side
    15,729.60x = 203,113,155.11
  5. Step 5: Solve for x
    x = 203,113,155.11/15,729.60
  6. Step 6: Final answer
    x = 12,912.80

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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.