Home / 13,138.53-19,710.77-4,373.79

Finding the Fourth Proportional to 13,138.53, 19,710.77 and 4,373.79

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Solution

The fourth proportional to 13,138.53, 19,710.77 and 4,373.79 is: 6,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.53 : 19,710.77 = 4,373.79 : x
  2. Step 2: Convert to fraction form
    13,138.53/19,710.77 = 4,373.79/x
  3. Step 3: Cross multiply
    13,138.53x = 19,710.77 × 4,373.79
  4. Step 4: Simplify right side
    13,138.53x = 86,210,746.85
  5. Step 5: Solve for x
    x = 86,210,746.85/13,138.53
  6. Step 6: Final answer
    x = 6,561.67

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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.