Home / 13,790.17-20,688.34-4,430.72

Finding the Fourth Proportional to 13,790.17, 20,688.34 and 4,430.72

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Solution

The fourth proportional to 13,790.17, 20,688.34 and 4,430.72 is: 6,647.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.17 : 20,688.34 = 4,430.72 : x
  2. Step 2: Convert to fraction form
    13,790.17/20,688.34 = 4,430.72/x
  3. Step 3: Cross multiply
    13,790.17x = 20,688.34 × 4,430.72
  4. Step 4: Simplify right side
    13,790.17x = 91,664,138.36
  5. Step 5: Solve for x
    x = 91,664,138.36/13,790.17
  6. Step 6: Final answer
    x = 6,647.07

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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.