Home / 13,995.12-19,313.88-7,707.72

Finding the Fourth Proportional to 13,995.12, 19,313.88 and 7,707.72

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Solution

The fourth proportional to 13,995.12, 19,313.88 and 7,707.72 is: 10,636.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.12 : 19,313.88 = 7,707.72 : x
  2. Step 2: Convert to fraction form
    13,995.12/19,313.88 = 7,707.72/x
  3. Step 3: Cross multiply
    13,995.12x = 19,313.88 × 7,707.72
  4. Step 4: Simplify right side
    13,995.12x = 148,865,979.15
  5. Step 5: Solve for x
    x = 148,865,979.15/13,995.12
  6. Step 6: Final answer
    x = 10,636.99

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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.