Home / 39,140.69-58,720.75-11,438.69

Finding the Fourth Proportional to 39,140.69, 58,720.75 and 11,438.69

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Solution

The fourth proportional to 39,140.69, 58,720.75 and 11,438.69 is: 17,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140.69 : 58,720.75 = 11,438.69 : x
  2. Step 2: Convert to fraction form
    39,140.69/58,720.75 = 11,438.69/x
  3. Step 3: Cross multiply
    39,140.69x = 58,720.75 × 11,438.69
  4. Step 4: Simplify right side
    39,140.69x = 671,688,455.82
  5. Step 5: Solve for x
    x = 671,688,455.82/39,140.69
  6. Step 6: Final answer
    x = 17,160.87

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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.