Home / 13,490.81-20,235.48-4,130.84

Finding the Fourth Proportional to 13,490.81, 20,235.48 and 4,130.84

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Solution

The fourth proportional to 13,490.81, 20,235.48 and 4,130.84 is: 6,196.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.81 : 20,235.48 = 4,130.84 : x
  2. Step 2: Convert to fraction form
    13,490.81/20,235.48 = 4,130.84/x
  3. Step 3: Cross multiply
    13,490.81x = 20,235.48 × 4,130.84
  4. Step 4: Simplify right side
    13,490.81x = 83,589,429.03
  5. Step 5: Solve for x
    x = 83,589,429.03/13,490.81
  6. Step 6: Final answer
    x = 6,196.03

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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.