Home / 13,986.16-19,300.80-7,698.40

Finding the Fourth Proportional to 13,986.16, 19,300.80 and 7,698.40

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Solution

The fourth proportional to 13,986.16, 19,300.80 and 7,698.40 is: 10,623.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.16 : 19,300.80 = 7,698.40 : x
  2. Step 2: Convert to fraction form
    13,986.16/19,300.80 = 7,698.40/x
  3. Step 3: Cross multiply
    13,986.16x = 19,300.80 × 7,698.40
  4. Step 4: Simplify right side
    13,986.16x = 148,585,278.72
  5. Step 5: Solve for x
    x = 148,585,278.72/13,986.16
  6. Step 6: Final answer
    x = 10,623.74

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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.