Home / 20,448.72-28,224.36-12,495.60

Finding the Fourth Proportional to 20,448.72, 28,224.36 and 12,495.60

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Solution

The fourth proportional to 20,448.72, 28,224.36 and 12,495.60 is: 17,247.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.72 : 28,224.36 = 12,495.60 : x
  2. Step 2: Convert to fraction form
    20,448.72/28,224.36 = 12,495.60/x
  3. Step 3: Cross multiply
    20,448.72x = 28,224.36 × 12,495.60
  4. Step 4: Simplify right side
    20,448.72x = 352,680,312.82
  5. Step 5: Solve for x
    x = 352,680,312.82/20,448.72
  6. Step 6: Final answer
    x = 17,247.06

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1.5x scale

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.