Home / 13,656.70-18,845.44-7,688.13

Finding the Fourth Proportional to 13,656.70, 18,845.44 and 7,688.13

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Solution

The fourth proportional to 13,656.70, 18,845.44 and 7,688.13 is: 10,609.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.70 : 18,845.44 = 7,688.13 : x
  2. Step 2: Convert to fraction form
    13,656.70/18,845.44 = 7,688.13/x
  3. Step 3: Cross multiply
    13,656.70x = 18,845.44 × 7,688.13
  4. Step 4: Simplify right side
    13,656.70x = 144,886,192.63
  5. Step 5: Solve for x
    x = 144,886,192.63/13,656.70
  6. Step 6: Final answer
    x = 10,609.17

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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.