Home / 47,988.40-71,980.32-16,821.28

Finding the Fourth Proportional to 47,988.40, 71,980.32 and 16,821.28

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Solution

The fourth proportional to 47,988.40, 71,980.32 and 16,821.28 is: 25,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,988.40 : 71,980.32 = 16,821.28 : x
  2. Step 2: Convert to fraction form
    47,988.40/71,980.32 = 16,821.28/x
  3. Step 3: Cross multiply
    47,988.40x = 71,980.32 × 16,821.28
  4. Step 4: Simplify right side
    47,988.40x = 1,210,801,117.21
  5. Step 5: Solve for x
    x = 1,210,801,117.21/47,988.40
  6. Step 6: Final answer
    x = 25,231.12

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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.