Home / 13,583.16-20,378.39-5,681.51

Finding the Fourth Proportional to 13,583.16, 20,378.39 and 5,681.51

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Solution

The fourth proportional to 13,583.16, 20,378.39 and 5,681.51 is: 8,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.16 : 20,378.39 = 5,681.51 : x
  2. Step 2: Convert to fraction form
    13,583.16/20,378.39 = 5,681.51/x
  3. Step 3: Cross multiply
    13,583.16x = 20,378.39 × 5,681.51
  4. Step 4: Simplify right side
    13,583.16x = 115,779,896.27
  5. Step 5: Solve for x
    x = 115,779,896.27/13,583.16
  6. Step 6: Final answer
    x = 8,523.78

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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.