Home / 13,935.30-20,903.63-5,614.20

Finding the Fourth Proportional to 13,935.30, 20,903.63 and 5,614.20

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Solution

The fourth proportional to 13,935.30, 20,903.63 and 5,614.20 is: 8,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.30 : 20,903.63 = 5,614.20 : x
  2. Step 2: Convert to fraction form
    13,935.30/20,903.63 = 5,614.20/x
  3. Step 3: Cross multiply
    13,935.30x = 20,903.63 × 5,614.20
  4. Step 4: Simplify right side
    13,935.30x = 117,357,131.48
  5. Step 5: Solve for x
    x = 117,357,131.48/13,935.30
  6. Step 6: Final answer
    x = 8,421.57

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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.