Home / 13,935.72-20,887.38-6,918.96

Finding the Fourth Proportional to 13,935.72, 20,887.38 and 6,918.96

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Solution

The fourth proportional to 13,935.72, 20,887.38 and 6,918.96 is: 10,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.72 : 20,887.38 = 6,918.96 : x
  2. Step 2: Convert to fraction form
    13,935.72/20,887.38 = 6,918.96/x
  3. Step 3: Cross multiply
    13,935.72x = 20,887.38 × 6,918.96
  4. Step 4: Simplify right side
    13,935.72x = 144,518,946.72
  5. Step 5: Solve for x
    x = 144,518,946.72/13,935.72
  6. Step 6: Final answer
    x = 10,370.40

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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.