Home / 13,331.66-19,983.57-5,430.77

Finding the Fourth Proportional to 13,331.66, 19,983.57 and 5,430.77

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Solution

The fourth proportional to 13,331.66, 19,983.57 and 5,430.77 is: 8,140.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.66 : 19,983.57 = 5,430.77 : x
  2. Step 2: Convert to fraction form
    13,331.66/19,983.57 = 5,430.77/x
  3. Step 3: Cross multiply
    13,331.66x = 19,983.57 × 5,430.77
  4. Step 4: Simplify right side
    13,331.66x = 108,526,172.45
  5. Step 5: Solve for x
    x = 108,526,172.45/13,331.66
  6. Step 6: Final answer
    x = 8,140.48

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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.