Home / 28,718.92-39,631.72-15,971.98

Finding the Fourth Proportional to 28,718.92, 39,631.72 and 15,971.98

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Solution

The fourth proportional to 28,718.92, 39,631.72 and 15,971.98 is: 22,041.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.92 : 39,631.72 = 15,971.98 : x
  2. Step 2: Convert to fraction form
    28,718.92/39,631.72 = 15,971.98/x
  3. Step 3: Cross multiply
    28,718.92x = 39,631.72 × 15,971.98
  4. Step 4: Simplify right side
    28,718.92x = 632,997,039.21
  5. Step 5: Solve for x
    x = 632,997,039.21/28,718.92
  6. Step 6: Final answer
    x = 22,041.12

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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.