Home / 13,710.25-18,919.33-7,659.35

Finding the Fourth Proportional to 13,710.25, 18,919.33 and 7,659.35

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Solution

The fourth proportional to 13,710.25, 18,919.33 and 7,659.35 is: 10,569.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.25 : 18,919.33 = 7,659.35 : x
  2. Step 2: Convert to fraction form
    13,710.25/18,919.33 = 7,659.35/x
  3. Step 3: Cross multiply
    13,710.25x = 18,919.33 × 7,659.35
  4. Step 4: Simplify right side
    13,710.25x = 144,909,770.24
  5. Step 5: Solve for x
    x = 144,909,770.24/13,710.25
  6. Step 6: Final answer
    x = 10,569.45

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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.