Home / 14,930.10-20,603.81-8,215.67

Finding the Fourth Proportional to 14,930.10, 20,603.81 and 8,215.67

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Solution

The fourth proportional to 14,930.10, 20,603.81 and 8,215.67 is: 11,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,930.10 : 20,603.81 = 8,215.67 : x
  2. Step 2: Convert to fraction form
    14,930.10/20,603.81 = 8,215.67/x
  3. Step 3: Cross multiply
    14,930.10x = 20,603.81 × 8,215.67
  4. Step 4: Simplify right side
    14,930.10x = 169,273,959.61
  5. Step 5: Solve for x
    x = 169,273,959.61/14,930.10
  6. Step 6: Final answer
    x = 11,337.76

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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.