Home / 38,688.36-58,039.80-12,386.04

Finding the Fourth Proportional to 38,688.36, 58,039.80 and 12,386.04

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Solution

The fourth proportional to 38,688.36, 58,039.80 and 12,386.04 is: 18,581.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688.36 : 58,039.80 = 12,386.04 : x
  2. Step 2: Convert to fraction form
    38,688.36/58,039.80 = 12,386.04/x
  3. Step 3: Cross multiply
    38,688.36x = 58,039.80 × 12,386.04
  4. Step 4: Simplify right side
    38,688.36x = 718,883,284.39
  5. Step 5: Solve for x
    x = 718,883,284.39/38,688.36
  6. Step 6: Final answer
    x = 18,581.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.