Home / 13,900.28-19,182.74-7,612.64

Finding the Fourth Proportional to 13,900.28, 19,182.74 and 7,612.64

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Solution

The fourth proportional to 13,900.28, 19,182.74 and 7,612.64 is: 10,505.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.28 : 19,182.74 = 7,612.64 : x
  2. Step 2: Convert to fraction form
    13,900.28/19,182.74 = 7,612.64/x
  3. Step 3: Cross multiply
    13,900.28x = 19,182.74 × 7,612.64
  4. Step 4: Simplify right side
    13,900.28x = 146,031,293.83
  5. Step 5: Solve for x
    x = 146,031,293.83/13,900.28
  6. Step 6: Final answer
    x = 10,505.64

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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.