Home / 28,640.24-42,972.60-15,501.92

Finding the Fourth Proportional to 28,640.24, 42,972.60 and 15,501.92

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Solution

The fourth proportional to 28,640.24, 42,972.60 and 15,501.92 is: 23,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.24 : 42,972.60 = 15,501.92 : x
  2. Step 2: Convert to fraction form
    28,640.24/42,972.60 = 15,501.92/x
  3. Step 3: Cross multiply
    28,640.24x = 42,972.60 × 15,501.92
  4. Step 4: Simplify right side
    28,640.24x = 666,157,807.39
  5. Step 5: Solve for x
    x = 666,157,807.39/28,640.24
  6. Step 6: Final answer
    x = 23,259.51

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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.