Home / 13,420.87-20,124.47-5,094.55

Finding the Fourth Proportional to 13,420.87, 20,124.47 and 5,094.55

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Solution

The fourth proportional to 13,420.87, 20,124.47 and 5,094.55 is: 7,639.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.87 : 20,124.47 = 5,094.55 : x
  2. Step 2: Convert to fraction form
    13,420.87/20,124.47 = 5,094.55/x
  3. Step 3: Cross multiply
    13,420.87x = 20,124.47 × 5,094.55
  4. Step 4: Simplify right side
    13,420.87x = 102,525,118.64
  5. Step 5: Solve for x
    x = 102,525,118.64/13,420.87
  6. Step 6: Final answer
    x = 7,639.23

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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.