Home / 28,440.36-42,690.60-15,971.04

Finding the Fourth Proportional to 28,440.36, 42,690.60 and 15,971.04

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Solution

The fourth proportional to 28,440.36, 42,690.60 and 15,971.04 is: 23,973.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.36 : 42,690.60 = 15,971.04 : x
  2. Step 2: Convert to fraction form
    28,440.36/42,690.60 = 15,971.04/x
  3. Step 3: Cross multiply
    28,440.36x = 42,690.60 × 15,971.04
  4. Step 4: Simplify right side
    28,440.36x = 681,813,280.22
  5. Step 5: Solve for x
    x = 681,813,280.22/28,440.36
  6. Step 6: Final answer
    x = 23,973.44

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1.5x scale

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.