Home / 13,705.04-18,912.49-7,655.60

Finding the Fourth Proportional to 13,705.04, 18,912.49 and 7,655.60

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Solution

The fourth proportional to 13,705.04, 18,912.49 and 7,655.60 is: 10,564.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.04 : 18,912.49 = 7,655.60 : x
  2. Step 2: Convert to fraction form
    13,705.04/18,912.49 = 7,655.60/x
  3. Step 3: Cross multiply
    13,705.04x = 18,912.49 × 7,655.60
  4. Step 4: Simplify right side
    13,705.04x = 144,786,486.59
  5. Step 5: Solve for x
    x = 144,786,486.59/13,705.04
  6. Step 6: Final answer
    x = 10,564.47

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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.