Home / 13,603.27-20,399.34-4,240.12

Finding the Fourth Proportional to 13,603.27, 20,399.34 and 4,240.12

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Solution

The fourth proportional to 13,603.27, 20,399.34 and 4,240.12 is: 6,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.27 : 20,399.34 = 4,240.12 : x
  2. Step 2: Convert to fraction form
    13,603.27/20,399.34 = 4,240.12/x
  3. Step 3: Cross multiply
    13,603.27x = 20,399.34 × 4,240.12
  4. Step 4: Simplify right side
    13,603.27x = 86,495,649.52
  5. Step 5: Solve for x
    x = 86,495,649.52/13,603.27
  6. Step 6: Final answer
    x = 6,358.45

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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.