Home / 39,688.09-59,530.91-13,390.63

Finding the Fourth Proportional to 39,688.09, 59,530.91 and 13,390.63

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Solution

The fourth proportional to 39,688.09, 59,530.91 and 13,390.63 is: 20,085.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.09 : 59,530.91 = 13,390.63 : x
  2. Step 2: Convert to fraction form
    39,688.09/59,530.91 = 13,390.63/x
  3. Step 3: Cross multiply
    39,688.09x = 59,530.91 × 13,390.63
  4. Step 4: Simplify right side
    39,688.09x = 797,156,173.59
  5. Step 5: Solve for x
    x = 797,156,173.59/39,688.09
  6. Step 6: Final answer
    x = 20,085.53

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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.