Home / 12,991.48-19,475.58-4,669.56

Finding the Fourth Proportional to 12,991.48, 19,475.58 and 4,669.56

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Solution

The fourth proportional to 12,991.48, 19,475.58 and 4,669.56 is: 7,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.48 : 19,475.58 = 4,669.56 : x
  2. Step 2: Convert to fraction form
    12,991.48/19,475.58 = 4,669.56/x
  3. Step 3: Cross multiply
    12,991.48x = 19,475.58 × 4,669.56
  4. Step 4: Simplify right side
    12,991.48x = 90,942,389.34
  5. Step 5: Solve for x
    x = 90,942,389.34/12,991.48
  6. Step 6: Final answer
    x = 7,000.16

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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.