Home / 20,586.36-28,398.72-13,019.94

Finding the Fourth Proportional to 20,586.36, 28,398.72 and 13,019.94

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Solution

The fourth proportional to 20,586.36, 28,398.72 and 13,019.94 is: 17,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.36 : 28,398.72 = 13,019.94 : x
  2. Step 2: Convert to fraction form
    20,586.36/28,398.72 = 13,019.94/x
  3. Step 3: Cross multiply
    20,586.36x = 28,398.72 × 13,019.94
  4. Step 4: Simplify right side
    20,586.36x = 369,749,630.48
  5. Step 5: Solve for x
    x = 369,749,630.48/20,586.36
  6. Step 6: Final answer
    x = 17,960.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.