Home / 13,868.85-19,127.67-9,385.50

Finding the Fourth Proportional to 13,868.85, 19,127.67 and 9,385.50

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Solution

The fourth proportional to 13,868.85, 19,127.67 and 9,385.50 is: 12,944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.85 : 19,127.67 = 9,385.50 : x
  2. Step 2: Convert to fraction form
    13,868.85/19,127.67 = 9,385.50/x
  3. Step 3: Cross multiply
    13,868.85x = 19,127.67 × 9,385.50
  4. Step 4: Simplify right side
    13,868.85x = 179,522,746.79
  5. Step 5: Solve for x
    x = 179,522,746.79/13,868.85
  6. Step 6: Final answer
    x = 12,944.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.