Home / 13,009.12-17,955.96-7,705.52

Finding the Fourth Proportional to 13,009.12, 17,955.96 and 7,705.52

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Solution

The fourth proportional to 13,009.12, 17,955.96 and 7,705.52 is: 10,635.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009.12 : 17,955.96 = 7,705.52 : x
  2. Step 2: Convert to fraction form
    13,009.12/17,955.96 = 7,705.52/x
  3. Step 3: Cross multiply
    13,009.12x = 17,955.96 × 7,705.52
  4. Step 4: Simplify right side
    13,009.12x = 138,360,008.90
  5. Step 5: Solve for x
    x = 138,360,008.90/13,009.12
  6. Step 6: Final answer
    x = 10,635.62

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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.