Home / 13,205.16-19,820.07-6,969.78

Finding the Fourth Proportional to 13,205.16, 19,820.07 and 6,969.78

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Solution

The fourth proportional to 13,205.16, 19,820.07 and 6,969.78 is: 10,461.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.16 : 19,820.07 = 6,969.78 : x
  2. Step 2: Convert to fraction form
    13,205.16/19,820.07 = 6,969.78/x
  3. Step 3: Cross multiply
    13,205.16x = 19,820.07 × 6,969.78
  4. Step 4: Simplify right side
    13,205.16x = 138,141,527.48
  5. Step 5: Solve for x
    x = 138,141,527.48/13,205.16
  6. Step 6: Final answer
    x = 10,461.18

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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.