Home / 15,607.45-23,408.12-12,991.76

Finding the Fourth Proportional to 15,607.45, 23,408.12 and 12,991.76

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Solution

The fourth proportional to 15,607.45, 23,408.12 and 12,991.76 is: 19,485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.45 : 23,408.12 = 12,991.76 : x
  2. Step 2: Convert to fraction form
    15,607.45/23,408.12 = 12,991.76/x
  3. Step 3: Cross multiply
    15,607.45x = 23,408.12 × 12,991.76
  4. Step 4: Simplify right side
    15,607.45x = 304,112,680.31
  5. Step 5: Solve for x
    x = 304,112,680.31/15,607.45
  6. Step 6: Final answer
    x = 19,485.10

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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.