Home / 9,991.54-14,989.70-3,417.76

Finding the Fourth Proportional to 9,991.54, 14,989.70 and 3,417.76

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Solution

The fourth proportional to 9,991.54, 14,989.70 and 3,417.76 is: 5,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,991.54 : 14,989.70 = 3,417.76 : x
  2. Step 2: Convert to fraction form
    9,991.54/14,989.70 = 3,417.76/x
  3. Step 3: Cross multiply
    9,991.54x = 14,989.70 × 3,417.76
  4. Step 4: Simplify right side
    9,991.54x = 51,231,197.07
  5. Step 5: Solve for x
    x = 51,231,197.07/9,991.54
  6. Step 6: Final answer
    x = 5,127.46

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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.