Home / 13,011.28-17,955.45-7,347.85

Finding the Fourth Proportional to 13,011.28, 17,955.45 and 7,347.85

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Solution

The fourth proportional to 13,011.28, 17,955.45 and 7,347.85 is: 10,139.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.28 : 17,955.45 = 7,347.85 : x
  2. Step 2: Convert to fraction form
    13,011.28/17,955.45 = 7,347.85/x
  3. Step 3: Cross multiply
    13,011.28x = 17,955.45 × 7,347.85
  4. Step 4: Simplify right side
    13,011.28x = 131,933,953.28
  5. Step 5: Solve for x
    x = 131,933,953.28/13,011.28
  6. Step 6: Final answer
    x = 10,139.97

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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.