Home / 13,332.70-19,999.05-13,138.30

Finding the Fourth Proportional to 13,332.70, 19,999.05 and 13,138.30

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Solution

The fourth proportional to 13,332.70, 19,999.05 and 13,138.30 is: 19,707.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,332.70 : 19,999.05 = 13,138.30 : x
  2. Step 2: Convert to fraction form
    13,332.70/19,999.05 = 13,138.30/x
  3. Step 3: Cross multiply
    13,332.70x = 19,999.05 × 13,138.30
  4. Step 4: Simplify right side
    13,332.70x = 262,753,518.62
  5. Step 5: Solve for x
    x = 262,753,518.62/13,332.70
  6. Step 6: Final answer
    x = 19,707.45

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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.