Home / 28,681.48-39,558.54-20,749.96

Finding the Fourth Proportional to 28,681.48, 39,558.54 and 20,749.96

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Solution

The fourth proportional to 28,681.48, 39,558.54 and 20,749.96 is: 28,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.48 : 39,558.54 = 20,749.96 : x
  2. Step 2: Convert to fraction form
    28,681.48/39,558.54 = 20,749.96/x
  3. Step 3: Cross multiply
    28,681.48x = 39,558.54 × 20,749.96
  4. Step 4: Simplify right side
    28,681.48x = 820,838,122.66
  5. Step 5: Solve for x
    x = 820,838,122.66/28,681.48
  6. Step 6: Final answer
    x = 28,619.10

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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.