Home / 28,012.71-42,035.46-15,543.16

Finding the Fourth Proportional to 28,012.71, 42,035.46 and 15,543.16

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Solution

The fourth proportional to 28,012.71, 42,035.46 and 15,543.16 is: 23,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.71 : 42,035.46 = 15,543.16 : x
  2. Step 2: Convert to fraction form
    28,012.71/42,035.46 = 15,543.16/x
  3. Step 3: Cross multiply
    28,012.71x = 42,035.46 × 15,543.16
  4. Step 4: Simplify right side
    28,012.71x = 653,363,880.45
  5. Step 5: Solve for x
    x = 653,363,880.45/28,012.71
  6. Step 6: Final answer
    x = 23,323.84

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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.