Home / 13,478.72-20,220.23-5,688.68

Finding the Fourth Proportional to 13,478.72, 20,220.23 and 5,688.68

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Solution

The fourth proportional to 13,478.72, 20,220.23 and 5,688.68 is: 8,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.72 : 20,220.23 = 5,688.68 : x
  2. Step 2: Convert to fraction form
    13,478.72/20,220.23 = 5,688.68/x
  3. Step 3: Cross multiply
    13,478.72x = 20,220.23 × 5,688.68
  4. Step 4: Simplify right side
    13,478.72x = 115,026,418.00
  5. Step 5: Solve for x
    x = 115,026,418.00/13,478.72
  6. Step 6: Final answer
    x = 8,533.93

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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.