Home / 15,243.90-21,039.85-9,277.49

Finding the Fourth Proportional to 15,243.90, 21,039.85 and 9,277.49

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Solution

The fourth proportional to 15,243.90, 21,039.85 and 9,277.49 is: 12,804.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.90 : 21,039.85 = 9,277.49 : x
  2. Step 2: Convert to fraction form
    15,243.90/21,039.85 = 9,277.49/x
  3. Step 3: Cross multiply
    15,243.90x = 21,039.85 × 9,277.49
  4. Step 4: Simplify right side
    15,243.90x = 195,196,997.98
  5. Step 5: Solve for x
    x = 195,196,997.98/15,243.90
  6. Step 6: Final answer
    x = 12,804.93

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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.