Home / 13,746.70-20,605.87-5,415.45

Finding the Fourth Proportional to 13,746.70, 20,605.87 and 5,415.45

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Solution

The fourth proportional to 13,746.70, 20,605.87 and 5,415.45 is: 8,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.70 : 20,605.87 = 5,415.45 : x
  2. Step 2: Convert to fraction form
    13,746.70/20,605.87 = 5,415.45/x
  3. Step 3: Cross multiply
    13,746.70x = 20,605.87 × 5,415.45
  4. Step 4: Simplify right side
    13,746.70x = 111,590,058.69
  5. Step 5: Solve for x
    x = 111,590,058.69/13,746.70
  6. Step 6: Final answer
    x = 8,117.59

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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.