Home / 13,857.08-19,124.85-7,807.88

Finding the Fourth Proportional to 13,857.08, 19,124.85 and 7,807.88

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Solution

The fourth proportional to 13,857.08, 19,124.85 and 7,807.88 is: 10,776.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.08 : 19,124.85 = 7,807.88 : x
  2. Step 2: Convert to fraction form
    13,857.08/19,124.85 = 7,807.88/x
  3. Step 3: Cross multiply
    13,857.08x = 19,124.85 × 7,807.88
  4. Step 4: Simplify right side
    13,857.08x = 149,324,438.19
  5. Step 5: Solve for x
    x = 149,324,438.19/13,857.08
  6. Step 6: Final answer
    x = 10,776.04

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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.