Home / 28,203.48-42,305.33-7,143.53

Finding the Fourth Proportional to 28,203.48, 42,305.33 and 7,143.53

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Solution

The fourth proportional to 28,203.48, 42,305.33 and 7,143.53 is: 10,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.48 : 42,305.33 = 7,143.53 : x
  2. Step 2: Convert to fraction form
    28,203.48/42,305.33 = 7,143.53/x
  3. Step 3: Cross multiply
    28,203.48x = 42,305.33 × 7,143.53
  4. Step 4: Simplify right side
    28,203.48x = 302,209,146.77
  5. Step 5: Solve for x
    x = 302,209,146.77/28,203.48
  6. Step 6: Final answer
    x = 10,715.31

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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.